BLOB with zlib compressed text

Hi!

It would be a nice feature if DB4S was able to interpret, preview, extract BLOB types with zlib compressed text in it.
Also if multiple cells are selected it could export all the selected cells.
Just two things I'd have needed a lot of times. :)
Please consider adding these features. Thanks!

Useful extra information

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

I'm using DB4S version:

• 3.10.1
• 3.10.0
• 3.9.1
• Other: ___

I have also:

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

El issue solicita dos funcionalidades independientes: interpretar, previsualizar y extraer texto BLOB comprimido con zlib, además de exportar varias celdas seleccionadas. Como no se indican archivos, pruebas ni puntos de entrada, comienza localizando las rutas de DB4S para la previsualización/extracción de BLOB y para la exportación de la selección de celdas. Para darlo por terminado, deben definirse el comportamiento y las pruebas para ambas solicitudes.