The addon is installed in the usual way. However, the sqlite binaries are not automatically included, because of their size.
When the addon is loaded, it checks that the sqlite binary has been installed, and if so, also checks that it is up to date. If necessary, a prompt is given to install the binary, for example:
The sqlite binary is out of date. To get the latest, run: getbin_psqlite_''
Run the getbin_psqlite_'' expression to install the binary.
The binaries can also be downloaded directly from download/sqlite