diff --git a/Cargo.lock b/Cargo.lock
index ad9c3356..8478774e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,7 +4,7 @@ version = "0.1.0"
 dependencies = [
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  "chain 0.1.0",
- "clap 2.16.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clap 2.17.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "db 0.1.0",
  "env_logger 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "import 0.1.0",
@@ -58,7 +58,7 @@ version = "0.3.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
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- "odds 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
+ "odds 0.2.24 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -112,7 +112,7 @@ dependencies = [
 
 [[package]]
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-version = "2.16.2"
+version = "2.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
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@@ -333,7 +333,7 @@ dependencies = [
 
 [[package]]
 name = "mio"
-version = "0.6.0"
+version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
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@@ -342,7 +342,7 @@ dependencies = [
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  "net2 0.2.26 (registry+https://github.com/rust-lang/crates.io-index)",
- "nix 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nix 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -372,7 +372,7 @@ dependencies = [
 
 [[package]]
 name = "nix"
-version = "0.6.0"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
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@@ -388,7 +388,7 @@ name = "nodrop"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "odds 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
+ "odds 0.2.24 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -412,7 +412,7 @@ dependencies = [
 
 [[package]]
 name = "odds"
-version = "0.2.23"
+version = "0.2.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -689,7 +689,7 @@ source = "git+https://github.com/debris/tokio-core#623ce443d89cd9ffa2c1adae8d2eb
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- "mio 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "mio 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
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  "slab 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -777,7 +777,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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@@ -796,14 +796,14 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum linked-hash-map 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6d262045c5b87c0861b3f004610afd0e2c851e2908d08b6c870cbb9d5f494ecd"
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-"checksum mio 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2dadd39d4b47343e10513ac2a731c979517a4761224ecb6bbd243602300c9537"
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+"checksum nix 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a0d95c5fa8b641c10ad0b8887454ebaafa3c92b5cd5350f8fc693adafd178e7b"
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diff --git a/tools/graph.dot b/tools/graph.dot
index 9f64ac5a..f786e892 100644
--- a/tools/graph.dot
+++ b/tools/graph.dot
@@ -1,87 +1,93 @@
 digraph dependencies {
 	N0[label="pbtc",shape=box];
-	N1[label="chain",shape=box];
-	N2[label="clap",shape=box];
-	N3[label="db",shape=box];
-	N4[label="env_logger",shape=box];
-	N5[label="keys",shape=box];
-	N6[label="message",shape=box];
-	N7[label="miner",shape=box];
-	N8[label="p2p",shape=box];
-	N9[label="script",shape=box];
-	N10[label="sync",shape=box];
-	N11[label="verification",shape=box];
-	N12[label="abstract-ns",shape=box];
-	N13[label="futures",shape=box];
-	N14[label="quick-error",shape=box];
-	N15[label="rand",shape=box];
-	N16[label="aho-corasick",shape=box];
-	N17[label="memchr",shape=box];
-	N18[label="ansi_term",shape=box];
-	N19[label="arrayvec",shape=box];
-	N20[label="nodrop",shape=box];
-	N21[label="odds",shape=box];
-	N22[label="base58",shape=box];
-	N23[label="bit-vec",shape=box];
-	N24[label="bitcrypto",shape=box];
-	N25[label="primitives",shape=box];
-	N26[label="rust-crypto",shape=box];
-	N27[label="bitflags v0.4.0",shape=box];
-	N28[label="bitflags v0.7.0",shape=box];
-	N29[label="byteorder",shape=box];
-	N30[label="cfg-if",shape=box];
-	N31[label="heapsize",shape=box];
-	N32[label="rustc-serialize",shape=box];
-	N33[label="serialization",shape=box];
-	N34[label="libc",shape=box];
-	N35[label="strsim",shape=box];
-	N36[label="term_size",shape=box];
-	N37[label="unicode-segmentation",shape=box];
-	N38[label="unicode-width",shape=box];
-	N39[label="vec_map",shape=box];
-	N40[label="yaml-rust",shape=box];
-	N41[label="crossbeam",shape=box];
-	N42[label="elastic-array",shape=box];
-	N43[label="ethcore-devtools",shape=box];
-	N44[label="parking_lot",shape=box];
-	N45[label="rocksdb",shape=box];
-	N46[label="test-data",shape=box];
-	N47[label="deque",shape=box];
-	N48[label="domain",shape=box];
-	N49[label="tokio-core",shape=box];
-	N50[label="log",shape=box];
-	N51[label="regex",shape=box];
-	N52[label="eth-secp256k1",shape=box];
-	N53[label="gcc",shape=box];
-	N54[label="futures-cpupool",shape=box];
-	N55[label="num_cpus",shape=box];
-	N56[label="rayon",shape=box];
-	N57[label="kernel32-sys",shape=box];
-	N58[label="winapi",shape=box];
-	N59[label="winapi-build",shape=box];
-	N60[label="lazy_static",shape=box];
-	N61[label="lazycell",shape=box];
-	N62[label="linked-hash-map",shape=box];
-	N63[label="mio",shape=box];
-	N64[label="miow",shape=box];
-	N65[label="net2",shape=box];
-	N66[label="nix",shape=box];
-	N67[label="slab",shape=box];
-	N68[label="ws2_32-sys",shape=box];
-	N69[label="rustc_version",shape=box];
-	N70[label="semver",shape=box];
-	N71[label="void",shape=box];
-	N72[label="ns-dns-tokio",shape=box];
-	N73[label="owning_ref",shape=box];
-	N74[label="time",shape=box];
-	N75[label="parking_lot_core",shape=box];
-	N76[label="smallvec",shape=box];
-	N77[label="regex-syntax",shape=box];
-	N78[label="thread_local",shape=box];
-	N79[label="utf8-ranges",shape=box];
-	N80[label="rocksdb-sys",shape=box];
-	N81[label="scoped-tls",shape=box];
-	N82[label="thread-id",shape=box];
+	N1[label="app_dirs",shape=box];
+	N2[label="chain",shape=box];
+	N3[label="clap",shape=box];
+	N4[label="db",shape=box];
+	N5[label="env_logger",shape=box];
+	N6[label="import",shape=box];
+	N7[label="keys",shape=box];
+	N8[label="log",shape=box];
+	N9[label="message",shape=box];
+	N10[label="miner",shape=box];
+	N11[label="p2p",shape=box];
+	N12[label="script",shape=box];
+	N13[label="sync",shape=box];
+	N14[label="verification",shape=box];
+	N15[label="abstract-ns",shape=box];
+	N16[label="futures",shape=box];
+	N17[label="quick-error",shape=box];
+	N18[label="rand",shape=box];
+	N19[label="aho-corasick",shape=box];
+	N20[label="memchr",shape=box];
+	N21[label="ansi_term",shape=box];
+	N22[label="ole32-sys",shape=box];
+	N23[label="shell32-sys",shape=box];
+	N24[label="winapi",shape=box];
+	N25[label="xdg",shape=box];
+	N26[label="arrayvec",shape=box];
+	N27[label="nodrop",shape=box];
+	N28[label="odds",shape=box];
+	N29[label="base58",shape=box];
+	N30[label="bit-vec",shape=box];
+	N31[label="bitcrypto",shape=box];
+	N32[label="primitives",shape=box];
+	N33[label="rust-crypto",shape=box];
+	N34[label="bitflags v0.4.0",shape=box];
+	N35[label="bitflags v0.7.0",shape=box];
+	N36[label="byteorder",shape=box];
+	N37[label="cfg-if",shape=box];
+	N38[label="heapsize",shape=box];
+	N39[label="rustc-serialize",shape=box];
+	N40[label="serialization",shape=box];
+	N41[label="libc",shape=box];
+	N42[label="strsim",shape=box];
+	N43[label="term_size",shape=box];
+	N44[label="unicode-segmentation",shape=box];
+	N45[label="unicode-width",shape=box];
+	N46[label="vec_map",shape=box];
+	N47[label="yaml-rust",shape=box];
+	N48[label="crossbeam",shape=box];
+	N49[label="csv",shape=box];
+	N50[label="elastic-array",shape=box];
+	N51[label="ethcore-devtools",shape=box];
+	N52[label="parking_lot",shape=box];
+	N53[label="rocksdb",shape=box];
+	N54[label="test-data",shape=box];
+	N55[label="deque",shape=box];
+	N56[label="domain",shape=box];
+	N57[label="tokio-core",shape=box];
+	N58[label="void",shape=box];
+	N59[label="regex",shape=box];
+	N60[label="eth-secp256k1",shape=box];
+	N61[label="gcc",shape=box];
+	N62[label="futures-cpupool",shape=box];
+	N63[label="num_cpus",shape=box];
+	N64[label="rayon",shape=box];
+	N65[label="kernel32-sys",shape=box];
+	N66[label="winapi-build",shape=box];
+	N67[label="lazy_static",shape=box];
+	N68[label="lazycell",shape=box];
+	N69[label="linked-hash-map",shape=box];
+	N70[label="mio",shape=box];
+	N71[label="miow",shape=box];
+	N72[label="net2",shape=box];
+	N73[label="nix",shape=box];
+	N74[label="slab",shape=box];
+	N75[label="ws2_32-sys",shape=box];
+	N76[label="rustc_version",shape=box];
+	N77[label="semver",shape=box];
+	N78[label="ns-dns-tokio",shape=box];
+	N79[label="owning_ref",shape=box];
+	N80[label="time",shape=box];
+	N81[label="parking_lot_core",shape=box];
+	N82[label="smallvec",shape=box];
+	N83[label="regex-syntax",shape=box];
+	N84[label="thread_local",shape=box];
+	N85[label="utf8-ranges",shape=box];
+	N86[label="rocksdb-sys",shape=box];
+	N87[label="scoped-tls",shape=box];
+	N88[label="thread-id",shape=box];
 	N0 -> N1[label="",style=dashed];
 	N0 -> N2[label="",style=dashed];
 	N0 -> N3[label="",style=dashed];
@@ -93,192 +99,219 @@ digraph dependencies {
 	N0 -> N9[label="",style=dashed];
 	N0 -> N10[label="",style=dashed];
 	N0 -> N11[label="",style=dashed];
+	N0 -> N12[label="",style=dashed];
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+	N9 -> N32[label="",style=dashed];
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+	N9 -> N40[label="",style=dashed];
+	N10 -> N2[label="",style=dashed];
+	N10 -> N32[label="",style=dashed];
+	N10 -> N38[label="",style=dashed];
+	N10 -> N40[label="",style=dashed];
+	N10 -> N54[label="",style=dashed];
+	N11 -> N8[label="",style=dashed];
 	N11 -> N9[label="",style=dashed];
-	N11 -> N25[label="",style=dashed];
-	N11 -> N29[label="",style=dashed];
-	N11 -> N33[label="",style=dashed];
-	N11 -> N43[label="",style=dashed];
-	N11 -> N44[label="",style=dashed];
-	N11 -> N46[label="",style=dashed];
+	N11 -> N15[label="",style=dashed];
+	N11 -> N16[label="",style=dashed];
+	N11 -> N18[label="",style=dashed];
+	N11 -> N31[label="",style=dashed];
+	N11 -> N32[label="",style=dashed];
+	N11 -> N40[label="",style=dashed];
+	N11 -> N49[label="",style=dashed];
+	N11 -> N52[label="",style=dashed];
+	N11 -> N57[label="",style=dashed];
 	N11 -> N62[label="",style=dashed];
-	N11 -> N74[label="",style=dashed];
-	N12 -> N13[label="",style=dashed];
-	N12 -> N14[label="",style=dashed];
-	N12 -> N15[label="",style=dashed];
-	N13 -> N50[label="",style=dashed];
-	N15 -> N34[label="",style=dashed];
-	N16 -> N17[label="",style=dashed];
-	N17 -> N34[label="",style=dashed];
-	N19 -> N20[label=""];
-	N19 -> N21[label=""];
-	N20 -> N21[label=""];
-	N24 -> N25[label="",style=dashed];
-	N24 -> N26[label="",style=dashed];
-	N25 -> N31[label="",style=dashed];
-	N25 -> N32[label="",style=dashed];
-	N26 -> N15[label="",style=dashed];
-	N26 -> N32[label="",style=dashed];
-	N26 -> N34[label="",style=dashed];
-	N26 -> N53[label="",style=dashed];
-	N26 -> N74[label="",style=dashed];
-	N31 -> N57[label="",style=dashed];
-	N33 -> N25[label="",style=dashed];
-	N33 -> N29[label="",style=dashed];
-	N36 -> N34[label="",style=dashed];
-	N36 -> N57[label="",style=dashed];
-	N36 -> N58[label="",style=dashed];
-	N43 -> N15[label="",style=dashed];
-	N44 -> N73[label="",style=dashed];
-	N44 -> N75[label="",style=dashed];
-	N45 -> N34[label="",style=dashed];
-	N45 -> N80[label="",style=dashed];
-	N46 -> N1[label="",style=dashed];
-	N46 -> N25[label="",style=dashed];
-	N46 -> N33[label="",style=dashed];
-	N47 -> N15[label="",style=dashed];
-	N48 -> N13[label="",style=dashed];
-	N48 -> N15[label="",style=dashed];
-	N48 -> N29[label="",style=dashed];
-	N48 -> N49[label="",style=dashed];
-	N49 -> N13[label="",style=dashed];
-	N49 -> N50[label="",style=dashed];
-	N49 -> N63[label="",style=dashed];
-	N49 -> N67[label="",style=dashed];
-	N49 -> N81[label="",style=dashed];
-	N51 -> N16[label="",style=dashed];
-	N51 -> N17[label="",style=dashed];
-	N51 -> N77[label="",style=dashed];
-	N51 -> N78[label="",style=dashed];
-	N51 -> N79[label="",style=dashed];
-	N52 -> N15[label="",style=dashed];
-	N52 -> N19[label="",style=dashed];
-	N52 -> N32[label="",style=dashed];
-	N52 -> N34[label="",style=dashed];
-	N52 -> N53[label="",style=dashed];
-	N53 -> N56[label="",style=dashed];
-	N54 -> N13[label="",style=dashed];
-	N54 -> N41[label="",style=dashed];
-	N54 -> N55[label="",style=dashed];
-	N55 -> N34[label="",style=dashed];
-	N56 -> N15[label="",style=dashed];
-	N56 -> N34[label="",style=dashed];
-	N56 -> N47[label="",style=dashed];
-	N56 -> N55[label="",style=dashed];
-	N57 -> N58[label="",style=dashed];
-	N57 -> N59[label="",style=dashed];
-	N63 -> N34[label="",style=dashed];
-	N63 -> N50[label="",style=dashed];
-	N63 -> N57[label="",style=dashed];
-	N63 -> N58[label="",style=dashed];
-	N63 -> N61[label="",style=dashed];
-	N63 -> N64[label="",style=dashed];
-	N63 -> N65[label="",style=dashed];
-	N63 -> N66[label="",style=dashed];
-	N63 -> N67[label="",style=dashed];
-	N64 -> N57[label="",style=dashed];
-	N64 -> N58[label="",style=dashed];
-	N64 -> N65[label="",style=dashed];
-	N64 -> N68[label="",style=dashed];
-	N65 -> N30[label="",style=dashed];
-	N65 -> N34[label="",style=dashed];
-	N65 -> N57[label="",style=dashed];
-	N65 -> N58[label="",style=dashed];
-	N65 -> N68[label="",style=dashed];
-	N66 -> N27[label="",style=dashed];
-	N66 -> N30[label="",style=dashed];
-	N66 -> N34[label="",style=dashed];
-	N66 -> N69[label="",style=dashed];
-	N66 -> N70[label="",style=dashed];
-	N66 -> N71[label="",style=dashed];
-	N68 -> N58[label="",style=dashed];
-	N68 -> N59[label="",style=dashed];
-	N69 -> N70[label="",style=dashed];
-	N72 -> N12[label="",style=dashed];
-	N72 -> N13[label="",style=dashed];
-	N72 -> N48[label="",style=dashed];
-	N72 -> N49[label="",style=dashed];
-	N74 -> N34[label="",style=dashed];
-	N74 -> N57[label="",style=dashed];
-	N74 -> N58[label="",style=dashed];
-	N75 -> N15[label="",style=dashed];
-	N75 -> N34[label="",style=dashed];
-	N75 -> N57[label="",style=dashed];
-	N75 -> N58[label="",style=dashed];
-	N75 -> N76[label="",style=dashed];
-	N78 -> N82[label="",style=dashed];
-	N80 -> N34[label="",style=dashed];
-	N80 -> N53[label="",style=dashed];
-	N82 -> N34[label="",style=dashed];
-	N82 -> N57[label="",style=dashed];
+	N11 -> N78[label="",style=dashed];
+	N11 -> N80[label="",style=dashed];
+	N12 -> N2[label="",style=dashed];
+	N12 -> N7[label="",style=dashed];
+	N12 -> N31[label="",style=dashed];
+	N12 -> N32[label="",style=dashed];
+	N12 -> N40[label="",style=dashed];
+	N13 -> N2[label="",style=dashed];
+	N13 -> N4[label="",style=dashed];
+	N13 -> N8[label="",style=dashed];
+	N13 -> N9[label="",style=dashed];
+	N13 -> N10[label="",style=dashed];
+	N13 -> N11[label="",style=dashed];
+	N13 -> N14[label="",style=dashed];
+	N13 -> N16[label="",style=dashed];
+	N13 -> N32[label="",style=dashed];
+	N13 -> N52[label="",style=dashed];
+	N13 -> N54[label="",style=dashed];
+	N13 -> N57[label="",style=dashed];
+	N13 -> N62[label="",style=dashed];
+	N13 -> N69[label="",style=dashed];
+	N13 -> N80[label="",style=dashed];
+	N14 -> N2[label="",style=dashed];
+	N14 -> N4[label="",style=dashed];
+	N14 -> N12[label="",style=dashed];
+	N14 -> N32[label="",style=dashed];
+	N14 -> N36[label="",style=dashed];
+	N14 -> N40[label="",style=dashed];
+	N14 -> N51[label="",style=dashed];
+	N14 -> N52[label="",style=dashed];
+	N14 -> N54[label="",style=dashed];
+	N14 -> N69[label="",style=dashed];
+	N14 -> N80[label="",style=dashed];
+	N15 -> N16[label="",style=dashed];
+	N15 -> N17[label="",style=dashed];
+	N15 -> N18[label="",style=dashed];
+	N16 -> N8[label="",style=dashed];
+	N18 -> N41[label="",style=dashed];
+	N19 -> N20[label="",style=dashed];
+	N20 -> N41[label="",style=dashed];
+	N22 -> N24[label="",style=dashed];
+	N22 -> N66[label="",style=dashed];
+	N23 -> N24[label="",style=dashed];
+	N23 -> N66[label="",style=dashed];
+	N26 -> N27[label=""];
+	N26 -> N28[label=""];
+	N27 -> N28[label=""];
+	N31 -> N32[label="",style=dashed];
+	N31 -> N33[label="",style=dashed];
+	N32 -> N38[label="",style=dashed];
+	N32 -> N39[label="",style=dashed];
+	N33 -> N18[label="",style=dashed];
+	N33 -> N39[label="",style=dashed];
+	N33 -> N41[label="",style=dashed];
+	N33 -> N61[label="",style=dashed];
+	N33 -> N80[label="",style=dashed];
+	N38 -> N65[label="",style=dashed];
+	N40 -> N32[label="",style=dashed];
+	N40 -> N36[label="",style=dashed];
+	N43 -> N24[label="",style=dashed];
+	N43 -> N41[label="",style=dashed];
+	N43 -> N65[label="",style=dashed];
+	N49 -> N36[label="",style=dashed];
+	N49 -> N39[label="",style=dashed];
+	N51 -> N18[label="",style=dashed];
+	N52 -> N79[label="",style=dashed];
+	N52 -> N81[label="",style=dashed];
+	N53 -> N41[label="",style=dashed];
+	N53 -> N86[label="",style=dashed];
+	N54 -> N2[label="",style=dashed];
+	N54 -> N32[label="",style=dashed];
+	N54 -> N40[label="",style=dashed];
+	N55 -> N18[label="",style=dashed];
+	N56 -> N16[label="",style=dashed];
+	N56 -> N18[label="",style=dashed];
+	N56 -> N36[label="",style=dashed];
+	N56 -> N48[label="",style=dashed];
+	N56 -> N57[label="",style=dashed];
+	N56 -> N58[label="",style=dashed];
+	N57 -> N8[label="",style=dashed];
+	N57 -> N16[label="",style=dashed];
+	N57 -> N70[label="",style=dashed];
+	N57 -> N74[label="",style=dashed];
+	N57 -> N87[label="",style=dashed];
+	N59 -> N19[label="",style=dashed];
+	N59 -> N20[label="",style=dashed];
+	N59 -> N83[label="",style=dashed];
+	N59 -> N84[label="",style=dashed];
+	N59 -> N85[label="",style=dashed];
+	N60 -> N18[label="",style=dashed];
+	N60 -> N26[label="",style=dashed];
+	N60 -> N39[label="",style=dashed];
+	N60 -> N41[label="",style=dashed];
+	N60 -> N61[label="",style=dashed];
+	N61 -> N64[label="",style=dashed];
+	N62 -> N16[label="",style=dashed];
+	N62 -> N48[label="",style=dashed];
+	N62 -> N63[label="",style=dashed];
+	N63 -> N41[label="",style=dashed];
+	N64 -> N18[label="",style=dashed];
+	N64 -> N41[label="",style=dashed];
+	N64 -> N55[label="",style=dashed];
+	N64 -> N63[label="",style=dashed];
+	N65 -> N24[label="",style=dashed];
+	N65 -> N66[label="",style=dashed];
+	N70 -> N8[label="",style=dashed];
+	N70 -> N24[label="",style=dashed];
+	N70 -> N41[label="",style=dashed];
+	N70 -> N65[label="",style=dashed];
+	N70 -> N68[label="",style=dashed];
+	N70 -> N71[label="",style=dashed];
+	N70 -> N72[label="",style=dashed];
+	N70 -> N73[label="",style=dashed];
+	N70 -> N74[label="",style=dashed];
+	N71 -> N24[label="",style=dashed];
+	N71 -> N65[label="",style=dashed];
+	N71 -> N72[label="",style=dashed];
+	N71 -> N75[label="",style=dashed];
+	N72 -> N24[label="",style=dashed];
+	N72 -> N37[label="",style=dashed];
+	N72 -> N41[label="",style=dashed];
+	N72 -> N65[label="",style=dashed];
+	N72 -> N75[label="",style=dashed];
+	N73 -> N34[label="",style=dashed];
+	N73 -> N37[label="",style=dashed];
+	N73 -> N41[label="",style=dashed];
+	N73 -> N58[label="",style=dashed];
+	N73 -> N76[label="",style=dashed];
+	N73 -> N77[label="",style=dashed];
+	N75 -> N24[label="",style=dashed];
+	N75 -> N66[label="",style=dashed];
+	N76 -> N77[label="",style=dashed];
+	N78 -> N15[label="",style=dashed];
+	N78 -> N16[label="",style=dashed];
+	N78 -> N56[label="",style=dashed];
+	N78 -> N57[label="",style=dashed];
+	N80 -> N24[label="",style=dashed];
+	N80 -> N41[label="",style=dashed];
+	N80 -> N65[label="",style=dashed];
+	N81 -> N18[label="",style=dashed];
+	N81 -> N24[label="",style=dashed];
+	N81 -> N41[label="",style=dashed];
+	N81 -> N65[label="",style=dashed];
+	N81 -> N82[label="",style=dashed];
+	N84 -> N88[label="",style=dashed];
+	N86 -> N41[label="",style=dashed];
+	N86 -> N61[label="",style=dashed];
+	N88 -> N41[label="",style=dashed];
+	N88 -> N65[label="",style=dashed];
 }
diff --git a/tools/graph.png b/tools/graph.png
index 81e0245d..d8e22015 100644
Binary files a/tools/graph.png and b/tools/graph.png differ