Move Color-related code to Colors.scala
Introduce inheritance to colors
Get rid of CSSColor and add color data to NamedColor
Add Enum.name and don't repeat color names in NamedEnum
Rename SampleData.load to loadRows
More informative IllegalArgumentException's message
Add serializers for joda-time types (DateTime, LocalTime, LocalDate)
Allow to serialize Map[Enum, _]
Add glyphs.Daylight example
Remove plotting examples (at least for now)
Add support for scoverage