tag filter was not working with the existing regex expression.  changed to \s+ which does a better job at dealing with whitespace between tags.
Merge pull request #256 from gbone24/bug-fix

filter plugin for tags was not working as expected.  Regex expression to check for white space needed to be changed.
Replace andSelf() with addBack()

Closes #247
Merge branch 'master' into features/gmb