Added specs for isAncestor utility function
Merge remote-tracking branch 'upstream/development' into development
Cleaned up tests; added additional test
Changed prop name for clarification, changed method

Note: This commit exposes a bug in .owns--namely, that it doesn't do what it says
it does. No surprise, really, as no tests are yet written for .owns. I'll resolve
both in a subsequent commit.
Added test for, fixed proxies' .owns method
Added, refined _.isAncestor tests
Added test for, patched hole in isAncestor fn
Merge remote-tracking branch 'upstream/development' into development
Added grandparent fixture
Modified to use grandparent fixture
Inlined keys() call and fixed erroneous target
Fixed erroneous description
Merge pull request #32 from ndhoule/development

Added tests for isAncestor utility function