Btviewer

What's Changed
* Add simple data dir list by Joe-Heffer-Shef in https://github.com/SheffieldMLtracking/btviewer/pull/23
* Feat/simple data nav by Joe-Heffer-Shef in https://github.com/SheffieldMLtracking/btviewer/pull/24
* Fetch image by Joe-Heffer-Shef in https://github.com/SheffieldMLtracking/btviewer/pull/25


**Full Changelog**: https://github.com/SheffieldMLtracking/btviewer/compare/v0.0.1rc3...v0.0.1rc4

**Full Changelog**: https://github.com/SheffieldMLtracking/btviewer/compare/v0.0.1rc2...v0.0.1rc3

What's Changed
* Add basic flask structure by Joe-Heffer-Shef in https://github.com/SheffieldMLtracking/btviewer/pull/7
* Restructure code into a properly organised flask project by Joe-Heffer-Shef in https://github.com/SheffieldMLtracking/btviewer/pull/8
* Use WSGI server by Joe-Heffer-Shef in https://github.com/SheffieldMLtracking/btviewer/pull/10
* fix: Add url prefix to get session dir by Joe-Heffer-Shef in https://github.com/SheffieldMLtracking/btviewer/pull/17
* Clarify frontend docs by Joe-Heffer-Shef in https://github.com/SheffieldMLtracking/btviewer/pull/15
* Add endpoints to turn numpy data files to images by Joe-Heffer-Shef in https://github.com/SheffieldMLtracking/btviewer/pull/12
* Add image auto brightness scaling by Joe-Heffer-Shef in https://github.com/SheffieldMLtracking/btviewer/pull/19
* Refactor image component by Joe-Heffer-Shef in https://github.com/SheffieldMLtracking/btviewer/pull/22

New Contributors
* Joe-Heffer-Shef made their first contribution in https://github.com/SheffieldMLtracking/btviewer/pull/7

**Full Changelog**: https://github.com/SheffieldMLtracking/btviewer/commits/v0.0.1rc2