All org-roam related information will now be stored in the database. Henceforth, the cache needs to be built synchronously once (via `M-x org-roam-build-cache`), which is then incrementally updated.
* (feature): add custom font styling for org-roam links
This adds 'org-roam-link-face. When org-roam-mode is on, all roam
links take this face. By default, it is exactly the same as 'org-link,
and would require styling.
* update docs
This allows for more flexible naming of files. Now filename defaults
to yyyymmddhhmmss_title_here.org. Also, remove
`org-use-timestamp-as-filename`, and change it to
`org-roam-filename-noconfirm` to better describe what it is doing.s
