Major additions

- Implemented all `abaaso.array` methods
- Implemented `abaaso.math`
- Added `client.script()`, `client.scroll()`, `client.scrollTo()`, `client.scrollPos()`, `client.size()`, & `client.stylesheet()`
- Added `element.appendTo()`, `element.clear()`, `element.disable()`, `element.enable()`, `element.has()`, `element.hidden()`, `element.position()`, `element.removeAttr()`, `element.scrollTo()`, `element.serialize()`, `element.size()`, & `element.toggleClass()`
- Added `number.even()`, `number.half()`, `number.odd()`, `number.random()`, & `number.round()`
- Added `string.hyphenate()`, `string.singular()`, `string.toFunction()`, & `string.uncapitalize()`
- Updated `keigai.utils`
- Fixed some `label` reference errors
- Added `nodeunit` unit tests