Guard vs cyclical structures

• #100 Failure messages that involved stringifying cyclical JSON no longer fails with a stringify error.

Update mocha

• Upgrade Mocha to 1.21.5 (Only used for reporters)

0.4.7

• Explicit done() call with true/false so grunt exits with correct code. (@Bartvds)

0.4.6

• Lodash is a dep

0.4.5.

• Add dest output config for outputting to a file (@BYK)

0.4.4

• Bump example mocha to 1.14.0
• Compatible with mocha 1.14.0 (@perfectworks)
• Cleanup log listeners during watch (@rayshih)

0.4.3

PhantomJS bump to 1.9, supposed to fix some issues with Windows.