Improved tests.

Conflicts:

	test/2-scalars.t
PR #18

- Fixed bug: Complex regular subexpression recursion limit (32766) exceeded at lib//YAML/Loader.pm line 533 ( YAML_PARSE_ERR_BAD_SINGLE ).
- Fixed bug: Subscalar with a double backslash right before a closing double qoute breaks _parse_inline_double_quoted regex.
- Added unittests.
0.93
0.93