Version 0.1.2: Miscellaneous bug fixes

This version fixes a number of bugs and some cases of bad behaviour. One extra argument was added to the get-key function. Otherwise no language changes.

The changes:

• Implemented size bounds on the regexp cache to prevent it from
  consuming too much memory
• Fixed error parsing float literals ending with E9 and similar
• Fixed bad behaviour causing order of keys in JSLT template
  to be reversed
• Fixed bug when comparing with null
• Fixed bug in to-json function
• Fixed bug in format-time function
• Added fallback argument to get-key function
• Support for more types in FunctionWrapper
• Upgraded to Jackson 2.9.6

The released version is available from Maven Central.