* use `termion` rather than `ncurses` to limit runtime deps
* cross-compile with `cross` instead of our own dockerfiles/scripts
* update instructions
* update release procedure and GitHub actions to match
* prep changelog for `v0.7.8`
Fixes#160Closes#265
* send folks to the issue tracker with the same template as bug
reports. Gathering this extra info up front should help things
move more quickly.
* in the template, ask for camera info.