v3.0.0: V3.0.0 - Support of UDS, tasks and other enhancements (#11)

V3.0.0 features:

- Large code refactoring
- Better commenting
- Documentation updated
- Support of Tasks and plugins
- Support of ATCRA, ATCAF0, ATCAF1, ATSW and many other commands
- Set ATE1 as default
- Addition of "test" command and many other commands
- Addition of a number of special setters
- Added the response processing function to support the XML format (see process_response())
- Support of UDS
- Add "commands"
- Add security note
- Add CONTRIBUTING
- Added task samples in plugins directory
- Revised MANIFEST.in
- Initial mt05 support
- Added new tag pos_answer and neg_answer
- Added nested tasks
- Management of shared namespace
- Manage input multiframe
- Implement UDS multiline output
- Implement UDS routines
- Completed MT05 Firmware Upload/Download tasks
- Added EQU Tasks
- Added ISO-TP
- Added UDS timers
- Revision of colors and autocompletion with Windows.
- Using pyreadline3 instead of tendo
- Improved loglevel command argument handling