Unable to open hidden database files

Details for the issue

Database file that start with "." (hidden by default on OSX) are not selectable by the file picker when you click "Open Database". The following screenshot shows the open dialogue side-by-side with the same window in the finder. You see there are several hidden files that don't appear in the sqlitebrowser window.

Version 3.8.0
Qt Version 4.8.7
SQLite Version 3.9.2

Useful extra information

The workaround is to rename the file, but this is a hassle and gets even more inconvenient when dealing with frameworks that expect the file to have a specific name.

I'm opening this issue because:

• DB4S is crashing
• DB4S has a bug
• DB4S needs a feature
• DB4S has another problem: ___

I'm using DB4S on:

• Windows
• Linux: ( distro: ___ )
• Mac OS
• Other: ___

I'm using DB4S version:

• 3.7.0
• 3.8.0
• Other: ___

I have also:

• Tried out the nightly version: https://github.com/sqlitebrowser/sqlitebrowser#windows
• Searched for an existing similar issue: https://github.com/sqlitebrowser/sqlitebrowser/issues?utf8=%E2%9C%93&q=is%3Aissue%20

Start in DB4S on macOS by using the “Open Database” file picker with a SQLite database whose filename starts with a dot, comparing it with Finder. Inspect the implementation behind the Open Database dialog; done means hidden database files can be selected and opened without renaming them.