Add support for merging inputs before running proguard
Add file function caching to merge task
Use compile:full-classpath for proguard inputs
Set default input filter to none
Add file content checking in deduplicate
Make directories in deduplicate merge strategy
Add discard merge strategy helpers for matching normalised path
Add easier creation of string and regex matching strategies
Add simple rename merge strategy
Add append merge strategy
Discard and filter manifest.mf by default
Some alignment reformatting