Clean up zcash_keys changelog

zcash_keys/CHANGELOG.md

@@ -9,43 +9,41 @@ The entries below are relative to the `zcash_client_backend` crate as of
 `zcash_client_backend 0.10.0`.
 
 ### Added
-- The following modules have been extracted from `zcash_client_backend` and
-  moved to this crate: 
-  - `address`
-  - `encoding`
-  - `keys`
-- `zcash_keys::address::UnifiedAddress::{unknown, has_orchard, has_sapling, 
-   has_transparent, receiver_types}`:
-- `zcash_keys::keys`:
+- `zcash_keys::address` (moved from `zcash_client_backend::address`). Further
+  additions to this module:
+  - `UnifiedAddress::{has_orchard, has_sapling, has_transparent}`
+  - `UnifiedAddress::receiver_types`
+  - `UnifiedAddress::unknown`
+- `zcash_keys::encoding` (moved from `zcash_client_backend::encoding`).
+- `zcash_keys::keys` (moved from `zcash_client_backend::keys`). Further
+  additions to this module:
   - `AddressGenerationError`
   - `UnifiedAddressRequest`
 - A new `orchard` feature flag has been added to make it possible to
   build client code without `orchard` dependendencies.
 
 ### Changed
+- The following methods and enum variants have been placed behind an `orchard`
+  feature flag:
+  - `zcash_keys::address::UnifiedAddress::orchard`
+  - `zcash_keys::keys::DerivationError::Orchard`
+  - `zcash_keys::keys::UnifiedSpendingKey::orchard`
 - `zcash_keys::address`:
-  - `RecipientAddress` has been renamed to `Address`
-  - `Address::Shielded` has been renamed to `Address::Sapling`
+  - `RecipientAddress` has been renamed to `Address`.
+  - `Address::Shielded` has been renamed to `Address::Sapling`.
   - `UnifiedAddress::from_receivers` no longer takes an Orchard receiver
     argument unless the `orchard` feature is enabled.
-  - `UnifiedAddress::orchard` is now only available when the `orchard` feature
-    is enabled.
-
 - `zcash_keys::keys`:
-  - `DerivationError::Orchard` is now only available when the `orchard` feature
-    is enabled.
   - `UnifiedSpendingKey::address` now takes an argument that specifies the
     receivers to be generated in the resulting address. Also, it now returns
     `Result<UnifiedAddress, AddressGenerationError>` instead of
     `Option<UnifiedAddress>` so that we may better report to the user how
     address generation has failed.
-  - `UnifiedSpendingKey::orchard` is now only available when the `orchard`
-    feature is enabled.
   - `UnifiedSpendingKey::transparent` is now only available when the
     `transparent-inputs` feature is enabled.
   - `UnifiedFullViewingKey::new` no longer takes an Orchard full viewing key
     argument unless the `orchard` feature is enabled.
 
 ### Removed
-- `zcash_keys::address::AddressMetadata` has been moved to 
-  `zcash_client_backend::data_api::TransparentAddressMetadata` and fields changed.
+- `zcash_keys::address::AddressMetadata`
+  (use `zcash_client_backend::data_api::TransparentAddressMetadata` instead).