Fixed ,< and ,> when 'whichwrap' contains 'h' and 'l'
corrected key binding for "change entire line" in help text.

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branch : /corrected-key-binding-for-change-entire--1387166872723
Merged in codelahoma/paredit//corrected-key-binding-for-change-entire--1387166872723 (pull request #9)

corrected key binding for "change entire line" in help text.
Add Racket support for '[]' and '{}'

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extra : amend_source : 73f87e63e03b3172e54d77faad3597431a5bc1fe