Awsume

- [43](https://github.com/trek10inc/awsume/pull/43) For Windows Command Prompt users, saves tmp.txt to aws folder
- [40](https://github.com/trek10inc/awsume/pull/40) Adds Fish script
- [48](https://github.com/trek10inc/awsume/pull/48) Allows MFA token to be passed via CLI args
- [56](https://github.com/trek10inc/awsume/pull/56) Allows calling assume-role with external ID from profile
- [56](https://github.com/trek10inc/awsume/pull/56) If a profile has a session token, it will use it instead of making the call to get the session token

- Creates a dedicated "Unset environment variables" flag
- `awsume -u` will now unset any AWS or AWSUME environment variables
- `awsume -u -s` will now show the commands required to unset any AWS or AWSUME environment variables

- Prevents installer from creating multiple alias when installing under multiple python versions with pyenv
- The alias for pyenv installations will now look like this:
- `alias awsume='. $(pyenv which awsume)'`

- Ensures that safe_printing will print to `sys.stderr`

- On installations with pyenv, uses correct pyenv root
- Loads awsume options _after_ validating that the aws directories exist

- Doesn't display the entire dump of the traceback when an error occurs while loading plugins, will now only display the error message itself
- If the error is an `ImportError` due to a package not being installed, a custom message will be displayed to install that package