change sources
Merge branch 'master' of https://github.com/leapframework/common.git

Conflicts:
	leap-lang/src/main/java/leap/lang/Arguments.java
	leap-lang/src/main/java/leap/lang/Iterables.java
	leap-lang/src/main/java/leap/lang/Iterators.java
	leap-lang/src/main/java/leap/lang/Joiner.java
	leap-lang/src/main/java/leap/lang/Predicates.java
	leap-lang/src/main/java/leap/lang/collection/FluentIterable.java
	leap-lang/src/main/java/leap/lang/io/Files.java
	leap-lang/src/main/java/leap/lang/reflection/Reflections.java
	leap-lang/src/main/java/leap/lang/resource/ClassPathResource.java
	leap-lang/src/main/java/leap/lang/resource/EncodedResource.java
	leap-lang/src/main/java/leap/lang/resource/FileSystemResource.java
	leap-lang/src/main/java/leap/lang/resource/UrlResource.java
	leap-lang/src/main/java/leap/lang/resource/VfsResource.java