Add option to insert a space between del and ins tags

Add option to insert a space between del and ins tags - this is only done in replacements, and will insert a space between the <del> and <ins> tags in the replace operation.

Bug fix for empty specialCaseChars

0.0.2

version 0.0.2

Enhance default vars

Merge pull request #4 from caxy/enhance-default_config_static_vars

Added static properties for the default config variables