Mitm

* Updated documentation.
* Bumped `httpq`.

* Locked `toolbox` and `httpq` versions in `requirements.txt`.

* Split apart `Protocol` into two separate functions - `resolve_destination` and `connect`.
* Fixed bugs relating to Toolbox.

Todo:

* Documentation needs to be updated.
* Begin locking mitm to specific toolbox versioning.

* Updated PyOpenSSL to latest version.
* Updated RSA key length to 2048.