I hit a problem with `epkgs.vterm` from `nixos-20.09` being too old and thus missing `vterm-goto-char` which is present in newer versions of `epkgs.vterm`.
I added a note to clear this up for future users, and added two other changes/clarifications as well:
* Changed `epkgs.emacs-libvterm` -> `epkgs.vterm`, as the old name is deprecated.
* Added note that `epkgs.vterm` already contains a `vterm-module.so`
* Added note that the version of `emacs` needs to be recent enough and that otherwise bugs might occur.
The semantics of SPC o t and SPC o T (or SPC o e and SPC o E in eshell's
case) have been reversed.
The lowercase keybind toggles the popup (and the prefix arg forciby
recreates the popup), and the uppercase keybind switches to that
terminal in the current buffer (whose prefix arg will open the terminal
in default-directory, rather than the project root).
- +{term,vterm,eshell}/open have been replaced with +X/here commands and
are bound to SPC o T (and SPC o E in eshell's case).
- +{term,vterm,eshell}/popup* have been replaced with +x/toggle commands
and are bound to SPC o t (and SPC o e in eshell's case).
The "toggle" behavior will do as the name implies, except will select
the popup if it is visible but unfocused.
