SQLite Database Browser 3.0.3

Changes:

• Fix crash if there is no new line in a comment add the end of a statementhttps://github.com/rp-/sqlitebrowser/issues/40
• Cleanup UI if database is closedhttps://github.com/rp-/sqlitebrowser/issues/44
• Sort objects by name in the structure tab
• Preselect currently selected table in the CVS export dialoghttps://github.com/rp-/sqlitebrowser/issues/41
• Fix parsing some CREATE TABLE statements with DEFAULT column constraint
• Fix broken update checker for windows