Removing SQLite:

- The ctags file should be updated into a single database (using a simple key/value store)
- Saving a single file should update the database for that file


DB format:


files.idx
name.idx
symbols.data

files.idx
-------------
{file-path, [1..N]}

name.idx
-------------
{name, [1...N]}

symbols.data
------------
{ID, {TagEntry}}