Fixed autoloading when run from within vendor folder.
Full multibyte (UTF-8) string support.
2.4.0 - 2016-12-03
Added support for floats when interpreting data.
Added a function_exists check to work around redeclaration issues.
2.3.0 - 2016-01-05
Added support for JEP-9,
including unary filter expressions, and && filter expressions.
Fixed various parsing issues, including not removing escaped single quotes
from raw string literals.
Added support for the map function.
Fixed several issues with code generation.
2.2.0 - 2015-05-27
Added support for JEP-12
and raw string literals (e.g., 'foo').
2.1.0 - 2014-01-13
Added JmesPath\Env::cleanCompileDir() to delete any previously compiled
JMESPath expressions.
2.0.0 - 2014-01-11
Moving to a flattened namespace structure.
Runtimes are now only PHP callables.
Fixed an error in the way empty JSON literals are parsed so that they now
return an empty string to match the Python and JavaScript implementations.
Removed functions from runtimes. Instead there is now a function dispatcher
class, FnDispatcher, that provides function implementations behind a single
dispatch function.
Removed ExprNode in lieu of just using a PHP callable with bound variables.
Removed debug methods from runtimes and instead into a new Debugger class.
Heavily cleaned up function argument validation.
Slice syntax is now properly validated (i.e., colons are followed by the
appropriate value).
Lots of code cleanup and performance improvements.
