Generator\OneOf initial implementation
Generator\OneOf better failure detection in test
Generator\oneOf is a function not a generator
Remove duplication
Generator\frequency as generalization of Generator\oneOf
Frequency Generator with random shrink
No empty generators for Frequency generator
Frequency::shrink throw exception when element is not in domain
OneOf Generator based on Frequency Generator
Change some test names to be more consistent
Add example/FrequencyTest to example tests runner
Generators with 0 frequency will never be chosen
Idiomatic conversion to boolean
Fix bias towards the first generator in Frequency Generator
Fix coding style
Explain assertTrue failure with message
Merge remote-tracking branch 'origin/one-of-generator'

Conflicts:
	src/Eris/Generator/Tuple.php