.vim: split ftdetect and ftplugin concepts for cram

.vim: enable syntax-based folds for JSON and HTML

.vim: sort tabs/spaces-related lines in ftplugin/*.vim

.vim: use setlocal in autocmd for setting list and spell (both window-local)

apt.conf.d: merge all separate files into one, add comments

.vimrc: default to pyflakes3 and python3

.vimrc: try ctrlp's tag search (in all open buffers) Requires exuberant_ctags or a compatible program (I have universal-ctags).

.vimrc: one day vimscript will let us have spaces around operators everywhere Today we prepare for that day, for it will come. I might've looked at https://favadi.com/update-your-vimrc-to-vim9-script/

.vimrc: copy neovim's cursor changes in insert and replace modes

.vimrc: recognize numbered lists when formatting Example: https://vimways.org/2018/formatting-lists-with-vim/