Minor bugfix release.
- Correctly display empty strings in HTML table, closes #314
- Allow “.” in database filenames, closes #302
- 404s ending in slash redirect to remove that slash, closes #309
- Fixed incorrect display of compound primary keys with foreign key references. Closes #319
- Docs + example of canned SQL query using || concatenation. Closes #321
- Correctly display facets with value of 0 - closes #318
- Default ‘expand labels’ to checked in CSV advanced export