Select only required routine columns (possible fix for bug #3515776)
Add anchors to database and table sections to allow linking
Allow using lang() in plugin with single language Adminer version
Allow using lang() in plugins
Save memory in get_file()
Remove bzip2 compression support

It didn't work for exports bigger than 1 MB.
An alternative would be to remove the limit from output buffer which would need memory for the whole export.
Another alternative would be to create a temporary file in output handler and bzwrite() to this file - that would work but it's complicated, especially if we want to output the file progressively - bzopen($tmp, 'w'), fopen($tmp, 'r').
Export SQLite views
Allow exporting views dependent on each other (bug #3459151)
Reduce memory used by TAR export
Display logout button in Nette design.
Constraint memory used in TAR export
Send export headers sooner
Add empty lines to source code
Fix resetting search (bug #3612507)
Highlight default submit button
add public schema as fallback in search_path
Don't drop original view and routine before creating the new one
Simplify initializing post variables
Move common function
Display navigation bellow main content on mobile browsers