rjdmoore

See [this comment](https://www.reddit.com/r/fictrac/comments/urrnr9/save_raw_without_do_display/) on forum. Currently the user must enable do_display in order for save_raw to output video, but this shouldn't be necessary.

Add some functional tests to be automatically checked during continuous integration builds to catch bugs on develop branch before merging to master

Update manual with a detailed user guide for configuration, with faqs and tips for better configurations.

Enable tracking of non-white/black balls by selection of foreground/background colours (as per FicTrac v1).