Litra-driver

Add Support for unique buffer lengths per device.

* Support unique endponts per device to support Litra Beam

* Add support for litra beam 21

Support added for multiple litra devices, thanks to dayer4b

https://pypi.org/project/litra-driver/

What's Changed
* Issue 16 - Ignore missing default profile by kharyam in https://github.com/kharyam/litra-driver/pull/17


**Full Changelog**: https://github.com/kharyam/litra-driver/compare/v0.0.3...v0.0.4

This release adds support for profiles. The profile information is stored in a user configuration file.