bump: added pruning, modified API
Merge branch 'master' of git://github.com/JuliaLang/METADATA.jl
Merge branch 'master' of git://github.com/JuliaLang/METADATA.jl
Merge branch 'master' of git://github.com/JuliaLang/METADATA.jl
Merge branch 'master' of git://github.com/JuliaLang/METADATA.jl
Merge branch 'master' of git://github.com/JuliaLang/METADATA.jl
Merge branch 'master' of git://github.com/JuliaLang/METADATA.jl
Merge branch 'master' of git://github.com/JuliaLang/METADATA.jl
Merge branch 'master' of git://github.com/JuliaLang/METADATA.jl
Merge branch 'master' of git://github.com/JuliaLang/METADATA.jl
Merge branch 'master' of git://github.com/JuliaLang/METADATA.jl
DecisionTree sha1 bump (some cleaning)