Switch to a flat data format.

Use zdump to generate data set as well as unit tests.
Move timezone specific unit tests to tests/zones.
Change timezone tests to use a common helper method.
Merge pull request #82 from moment/feature/memoize-timestamps

Precomputed offset changes.
Add tests for unpacking base 60 ints
Adding failing tests for parsing base 60 floats
Passing tests for unpacking base 60 floats
Adding tests for unpacking a string of data into an object of arrays
Switching Zone to use unpack()
Adding tests for packing base60 ints
Adding test and utils files for base60 packing
Add packing of floating point numbers and tests
Add moment.tz.pack to the utils and add tests
Add tests for packing bad input data
Add tests for Zone(), Zone#_index, Zone#abbr, and Zone#offset
Add tests for moment.tz.add
Add some more tests for moment.tz.add
Add failing tests for links
Removing old version of the links tests
Cleaning up structure and adding passing link tests
Adding tests for moment.tz.names()
Add data-zdump and data-zic tasks