Changed the journal mode of the SQLite DB to WAL.

https://github.com/JoshuaWise/better-sqlite3/issues/262#issuecomment-549872386

https://www.sqlite.org/wal.html

Just do it. It should near instanly make Bibliogram faster.

src/lib/db.js

@@ -5,4 +5,5 @@ const fs = require("fs")
 const dir = pj(__dirname, "../../db")
 fs.mkdirSync(pj(dir, "backups"), {recursive: true})
 const db = new sqlite(pj(dir, "bibliogram.db"))
+db.pragma("journal_mode = WAL")
 module.exports = db