set version to 0.5.3 

release 0.5.2, drop 2.10 support, change license to Apache 2.0 

make it work in 2.10 

fixing scala 2.10 support 

release 0.4.1 

update version in readme 

fix version in readme 

release 0.1: distinctBy, foldWhile, reduceWhile, !<:<, !=:=