angular-history-28 conditionally suppress event broadcasts.  added some convenience methods to Watch objects; need to add a few more.  experimental; untested mostly
angular-history-28 adding docs and fixing memory leak

mem leak fix courtesy of @hyperlisk
angular-history-33 update devdeps
removing node 0.11 from build targets because errors
v bump in README.md
Merge pull request #34 from boneskull/master

resolving several issues