Rolling over version number.
Merge pull request #45 from vivin/1.3

1.3
Merge pull request #46 from vivin/1.3

issue #16
merge upstream to master
Merge pull request #47 from vivin/1.3

Removing commented-out console.logs
Merge pull request #48 from vivin/1.3

issue #16

Added ability for custom, compound, and overridden constraints to
respect validateEmptyFields and ignoreEmpty. Still need to add tests for
this behavior.

merge upstream to master
issue #16

Added tests to confirm that custom, compound, and overridden constraints
honor ignoreEmpty and validateIfEmpty options.