Added stuff for the Collatz Conjecture
Mini mocking framework added

Added Validatable interface for mocks to implement
Added Validates matcher for checking Validatables
Added IsBetween matcher for checking for numbers in a range
Tweaked EZRandom
Added MockSimpleRandom, a mock for SimpleRandom
Added Tests for Validatable, MockSimpleRandom, and EZRandom
Tweaks to UDie
Merge branch 'dev' of https://github.com/sad2project/UDiceSystem into dev
Merge branch 'dev' of https://github.com/sad2project/UDiceSystem into dev