Add TRBL and WSC type synonyms (#26)

Shorthand (#25)

* [WIP]

* [WIP]

* [WIP]

* Fix border'

* Refactor example

* Update example

* Add more convenience functions

* [WIP]

* Try new shorthand approach for border

* Update other border shorthand functions

* Remove commented out code

* [WIP] Outline

* [WIP] More border shorthand

* Finish up border shorthand

* Add longhand outline examples

* [WIP]

* Update margin

* Update padding

* Update border-radius

* Move values to Value module

Add box-shadow, shorthand functions, renaming (#22)

Fix rendering of zero (#21)

Add shorthand functions (#20)

Add outline, currentColor (#19)

Require non-empty arrays in rulesets (#18)

* Require non-empty arrays in rulesets

* Deal with Maybe explicitly

Add font-weight (#17)

Only render rulesets with selectors & declarations (#16)

Fix hyphenated property rendering (#15)