README
- Remove header from README (we don't add such header by convention)
- Move sections in README to better the reflect the structure of the
other READMEs
- Simplify documentation
- Remove Thanks section (we don't add such section by convention, it is
very hard to maintain and keep accurate, user can see credits for a
package in the package source code directly)
- Remove the package default key bindings (same reason, it is also hard
to keep in sync if the bindings change upstream, the users should check
the default bindings themselves).
CONFIGURATION
- Add spacemacs key bindings under `SPC x b` for text boxes (I prefer
to use `SPC x` instead of `SPC i` because rebox modify an existing text,
it does not _insert_ a box per se).
- Add a transient state for quick cycling
- Add a layer variable `rebox-enable-in-text-mode` to enable the mode
in text-mode buffers
- Move functions to funcs.el
squash! rebox: various modifications
