allow call on validator instances
v0.4.0 release date.
Merge branch 'patch-1' of https://github.com/eelkeh/cerberus into eelkeh-patch-1
Version bumped to 0.4.1
Merge branch 'master' into eelkeh-patch-1
__call__ should return validate()
added test for callable Validator instances
Merge branch 'patch-1' of https://github.com/eelkeh/cerberus into eelkeh-patch-1
Validator is now a callable.
Eelke Hermens
Merge branch 'eelkeh-patch-1'