Release Name: 0.1.5

Notes:
Rasta 0.1.5 has a new feature to color the tab based on 
the results of tests on that worksheet. In addition, the
following bugs were fixed:

* Errors in test fixtures that failed when required were
not raising exceptions properly so we now trap and throw 
an exception. 

* Removed the auto-bookmarking since we now have a nice way
to restart with --continue, --pagecount and --recordcount

* Fixed issues in reading cells that were multiline. Also
made a special case to pass in numbers preceeded by a zero
(like in zip codes) as a string



Changes: