Remove leftover console log
Fix crash on unit checking with getchan, getUrl and putChan

These functions have no implementation yet, that is a future task
Remove another leftover console log
Fix crash for unit function of do. No implementation yet.
Fix crash for unit function of debug. No implementation yet.
Add base cases for UnitObject versions of min and max
Merge branch 'units' of https://github.com/OpenACCEL/OpenACCEL into units