1.8.0: Fixed bug in detecting relative keywords in ctor parameter when using…

… a test now

1.7.0: Moved average to the modifiers and documented. Fixed human diff defau…

…lt when null.

1.6.0: Fixed "Cannot access property ::$toStringFormat" when extending Carbo…

…n and type juggling to a string occurs.  Added supporting test.

1.5.0

Updated readme and history

1.4.0

Fixed up readme (cleared test now mock) and added a few gotchas.

1.3.0

Released 1.3.0

1.2.0

Updated history file and added history section to readme

1.1.0

Simplified now()

1.0.1

for now remove composer requirement for testing

1.0.0

Add Packagist min stability setting and readme typo