Fix determination of native Issue
Fix determination of native Issue
Implement Comparable<Subclass> for HASH<Subclass>
Add Hash256Map
Merge branch 'master' of github.com:MadeInChina/ripple-lib-java

Conflicts:
	ripple-core/src/main/java/com/ripple/core/types/hash/HASH.java
Changle BouncyCastle PROVIDER_NAME to "RBC"
Update README.md