0.1: Jul 25 2011
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  * initial release

0.2: Sep 24 2011
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  * Added custom configuration of PCRE options.
  * Added non-precompiling quasiquoters.
  * Fixed a bug where patterns with no captures would fail.
  * Decided to remove the defaulting to 'read' - too much magic.

0.3: Sep 25 2011
  * Fixed a capture indexing bug, where capture fields which aren't bound would
    cause subsequent bound captures to be incorrect.
  * Above bug fix actually neatened up code.
  * Added configuration of default mapping pattern.

0.4: Oct 11 2012
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  * Made configuration into a datatype.

0.4.1: Feb 4 2013
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  * Precompilation bugs fixed by [takano-akio](https://github.com/takano-akio)!
    Now precompilation is on by default.