Fixing .env files to work for each mode (development, production), and updating README with deployment instructions.

Update project thumbnail when returning to the projects view. Adding ability to clobber a thumbnail.

Integrated Export API, with video playback, download, export again buttons. Load the most recent export, and poll any active export records for progress.

Updated clips to have context menu, larger. Thumbnails only appear once loaded. Fixed some buggy code when switching between projects (showing the wrong clips). Added time calculation to timeline and clips.

Improved timeline trimming, integrated Clip API calls (create, load, delete), fixed duplicate upload bug, made errors prettier / parse key/value, capitalize, and handle 404 on editor

Added real file uploading via axios, and now list actual File objects, and load project details when loading the editor. Made components conditional based on when the editor loads project data.

Removed fetch and replaced with axios (mostly due to simpler syntax, and support for upload progress events). Also added support for custom errors, for failed API calls, failed login, etc... Errors are stateful, and can be dismissed by the user.