Release Name: 0.3

Notes:
This release greatly improves support for running the client on Windows along 
with a few minor authentication related improvements.


Changes:
* The client now correctly detects the location of the user's home directory on 
Windows. This will typically be along the lines of "C:\Documents and 
Settings\username".

* If your ssh key is in a location other than HOME\.ssh, you can now specify the 
key path using the optional -k/--key switch. For example: "heroku upload_authkey 
-k C:\mykeys\id_rsa.pub". This also works on Unix/Linux/OS X.

* Password entry at the prompt is now masked on Windows.

* An issue where the user was occasionally prompted for username/password twice 
was corrected

* Upon encountering any authentication problem, the client now deletes the local 
credentials file to give the user a clean slate retry from.