Make validate_trait_int more pythonic
Make validate_trait_type more pythonic
Make validate_float_check more pythonic
Revert "Make validate_trait_type more pythonic"

This reverts commit 5fdbf15bbbcc866e577788295b6eb9531114999d.
Improve dictionary validate
Style
Merge branch 'cython/validators' into cython/update-master
Initial implementation of Integer trait