Release 2.1.1

• models: use absolute path to DB file in knexfile (60f2432)
• ci: update release script to prevent release [CI SKIP] (b027a28)
• ci: remove unnecessary creation of dir [CI SKIP] (8fe9bcb)
• package.json: fix email address [CI SKIP] (b33e4a6)
• package.json: remove unused dependency [CI SKIP] (3623a11)