0.1

• Basic functionality (normal and regex search, database, ...)
• Option to show files/folders when search entry is empty
• Don't block main thread while searching
• Localization support

0.2

• Custom query syntax (probably similar to Everything Search (https://www.voidtools.com/support/everything/searching/)
• Custom filters

0.3

• inotify support (detect filesystem changes automatically) to limit manual database updates to a minimum
• Make indexing certain data configurable (file size, mtime, ...)

0.4

• Custom listview widget to improve performance
• Drag and drop support

0.5

• Search history
• Bookmarks

0.6

• Thumbnails

0.7

• File properties window

0.8

• Icon view

Stuff I'm still experimenting with that might happen at some point (or not)

• Qt5 UI
• libfsearch