Add. sqlite3.open_v2.
Add. sqlite3.open_uri.
Add. sqlite3.errmnemo - return mnemonic for error code (sqlite3.erromnemo(sqlite3.MISUSE) -> 'MISUSE')
```lua
sqlite3.open_v2("test.db", {sqlite3.OPEN_READWRITE, sqlite3.OPEN_CREATE})
sqlite3.open_v2("test.db", sqlite3.OPEN_READWRITE + sqlite3.OPEN_CREATE)
sqlite3.open_uri("file:test.db", {sqlite3.OPEN_READWRITE + sqlite3.OPEN_CREATE}) -- OPEN_URI set always
```