do not skip code for AnnotationsVisitor

0.2.9: fix checking debug build type

0.2.8: do not skip code for PredicateClassVisitor and remove r class …

…pattern

Merge branch 'feature/collect-styleables'

Close #1

copy non-class file instead of skip

Fix DirProcessor process on non-class files

shrinker 2.3: avoid creating negative size byte array

migrate to java 8 and optimize class transformation

update build tools to 3.0.0 and gradle to 4.1

Bump to 0.1.5