implements credit card validation
Merge pull request #465 from danielb2/creditcard

implements credit card validation
Updating README since number.creditCard takes no arguments
Merge pull request #467 from nlindley/creditCardReadme

Updating README since number.creditCard takes no arguments
New lead maintainer
Use Object.create in Any.clone to improve IE9 support
Used Object.create() instead of __proto__
change implementation of creditcard to use string
fix readme index
fix readme index
Add format and iso to date type
Update docs
Stricter ISO and reuse of date in string.isoDate
Integrate #428 unit tests
Add greater() and less() to number type. Closes #411
Named string regex patterns.

Closes #439.