Cromshell

Changes and new features!

New commands, new features, new storage locations!

New commands
* fetch-logs: download all of the logs for a workflow
* list-outputs: list the outputs created by a workflow
* fetch-all: download logs AND outputs for a workflow... potentially VERY large....
* list: display a list of all the jobs submitted through cromshell

New Features
* id directories are now stored in the ~/.cromshell directory in a subdirectory corresponding to which cromwell server ran them
* cromshell now keeps track of which server a job ran on will connect to the correct one on subsequent connections
* updated the default server to methods cromwell 36
* better cromshell --help output, improved readme

This is the first labelled release of cromshell.

It includes some big changes from previous version.
1. The `cromwell` script has been renamed to `cromshell`. This allows both cromshell and the actual cromwell tools to be installed together and not conflict.
2. There's a new `notify` command which allows you to receive email when your job is complete. Very useful!
3. The script has been totally refactored to support better error messages and status codes.