Support animation of shadow
Fix optional values in shadowType
Add a test for text-shadow
Test for missing shadow
Change behavior of interpolate/add for shadows with mismatched inset/outset
Merge pull request #50 from dstockwell/shadow

Support animation of shadow
Add font-weight type
Make the internal representation for font-weight be value / 100 - 1
font-weight zero() is 0
Support animation of non-numeric types
Use arrays instead of objects to represent colors
Add all named colors
Add a test for named colors
Merge pull request #52 from dstockwell/color-names

Color names
Merge pull request #45 from dstockwell/font-weight

Add font-weight type
return base if delta is undefined
Merge pull request #51 from dstockwell/any-type

Support animation of non-numeric types
Add missing tests to harness
Add link to current test in test-harness
Update test-integer to fit within the test-harness