Added File.isJar, closes #151
Added File.isParentOf, closes #143
Added File.isChildOf, closes #142
Added File.contains, closes #144
Added File.isContainedIn, closes #145
Added File.file(String, String), closes #141
Added File.className, closes #146
Added List.tap, closes #133
Added List.tapEmpty, closes #134
Added List.tapNonEmpty, closes #135
Added Any.|>  closes 132
Generalized Any.{tap, update, withSideEffect} to accept actions returning non-Unit, closes #130
Added Any.addTo(M.Builder), closes #131