Base
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$push can now accept key, value parameters for object creating in addition to only value for arrays
Added new $map function to base
$getKeys now makes use of $map
$ now falls back to the document for default context
$ properly accounts for brackets anywhere in selectors
$ can not accept a selector as the optional second parameter context
$each now accepts an optional third parameter for arguments and context
$each executes against the standard $exec function for consistency
$html and $attr accounts for setting the value "0"

DOM
---
$ selector accepts optional context parameter
$siblings and $selector now accept an optional filter selector parameter
$text properly handles "0" value
Added new functions parent, last, contains, empty, prop, removeAttr, val, toggle, eq, find, next, prev, filter, is, indexOf, closest, toggleClass, position, offset, width, height, off, and trigger

Events
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Added new function off
Added new option to on for one, which unbinds an event after the first fire
Added new standalone function one
All events are now added to an internal reference object
Added new function trigger to execute bound callbacks

Polyfill: Placeholder
---------------------
Simplified logic by using Wee.events

Grunt
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Updated grunt-contrib-less to 0.11.3

Other
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Various cleanup and comment editing