clean up code a bit
add Model.inject function to replace instance methods helpers
add schema utilities, and refactor core
schema optimizations and refactoring
refactor validator and remove now invalid test case
implement more full normalization of callbacks
remove callbacks object and fix normalize functionality
update schema/transformation docs
refactor cast object
refactor core and integrate all changes
rename typeCast -> typecast, gotta love case insensitivity
fix overlooked type check in schema, and change test to verify functionality
Merge pull request #51 from vanetix/refactor

Refactor