Feature/e57

[dancergraham]

Add e57 file support with colors

[dancergraham]

closes #20

[nachovizzo]

Amazing!

Thanks for the contribution. I feel like we would need to use some patterns as the list of possible try/catches is getting too long.

@dancergraham do you need me to spin a new release so you can pip install lidar-visualizer from any machine?

[dancergraham]

Yes it would be much neater as a match / case, if matching logic can be defined (e.g. by file extension). A factory pattern would be an obvious choice for building the readers. It would also be good to document the supported file types on the GitHub readme - I had to dig into the source code to see what was supported.

No rush for a release on my side - I can build from source as needed, though I'll get that warm fuzzy feeling when I see it go out to PyPI