#96 Release build R8 warnings (#1482)

* #96 Release build R8 warnings

Closes #96

* #96 Proguard and documentation update

Closes #96

---------

Co-authored-by: Milan Cerovsky <milan.cerovsky@leeaf.life>

README.md

@@ -68,5 +68,4 @@ the project, these steps are not necessary.)
 1. Test coverage for Compose code will be low, due to [known limitations](https://github.com/jacoco/jacoco/issues/1208) in the interaction between Compose and Jacoco.
 1. Adding the `espresso-contrib` dependency will cause builds to fail, due to conflicting classes.  This is a [known issue](https://github.com/Electric-Coin-Company/zcash-android-wallet-sdk/issues/306) with the Zcash Android SDK.
 1. Android Studio will warn about the Gradle checksum.  This is a [known issue](https://github.com/gradle/gradle/issues/9361) and can be safely ignored.
-1. [#96](https://github.com/Electric-Coin-Company/zashi-android/issues/96) - Release builds print some R8 warnings which can be safely ignored.
 1. During app first launch, the following exception starting with `AndroidKeysetManager: keyset not found, will generate a new one` is printed twice.  This exception is not an error, and the code is not being invoked twice.

app/proguard-project.txt

@@ -27,4 +27,9 @@
 # in the projects, so the classes aren't present.  These warnings are safe to suppress.
 -dontwarn kotlinx.serialization.KSerializer
 -dontwarn kotlinx.serialization.Serializable
--dontwarn kotlinx.serialization.internal.AbstractPolymorphicSerializer
+-dontwarn kotlinx.serialization.internal.AbstractPolymorphicSerializer
+
+-keepclassmembers class java.util.concurrent.ConcurrentHashMap { *; }
+-keepclassmembers class java.util.IntSummaryStatistics { *; }
+-keepclassmembers class java.util.LongSummaryStatistics { *; }
+-keepclassmembers class java.util.DoubleSummaryStatistics { *; }

settings.gradle.kts

@@ -272,7 +272,6 @@ dependencyResolutionManagement {
             bundle(
                 "androidx-compose-core",
                 listOf(
-                    "androidx-compose-compiler",
                     "androidx-compose-foundation",
                     "androidx-compose-material3",
                     "androidx-compose-tooling",
@@ -356,4 +355,4 @@ if (bip39IncludedBuildPath.isNotEmpty()) {
             substitute(module("cash.z.ecc.android:kotlin-bip39")).using(project(":bip39-lib"))
         }
     }
-}
+}