Transformer for rounding dates to calendar units
Fix using “unsafe” Key-Path Accessor constructor

Now uses correct encoded type. It always will be an object.
Merge branch 'master' of https://github.com/iMartinKiss/Objective-Chain

# By Juraj Homola
# Via Juraj Homola
* 'master' of https://github.com/iMartinKiss/Objective-Chain:
  OCATransformer: +stringFromCountWithZero:One:Few:Many