KeePass 2.52

What's new in this version:

New Features
- Added 'Copy Initial Password' command in the tools menu of the entry dialog; it copies (to the clipboard) the password that was current when the dialog was opened
- When multiple entries are selected (containing at least one attachment), the number of attachments is now displayed in the 'Attachments' submenu of the entry menu
- Added option 'Alt. item background color' (supporting the states 'Off', 'On, default color' and 'On, custom color'); this combines the previous two options 'Use alternating item background colors' and 'Custom alt. item color'
- Comment placeholders ({C:...}) may now contain balanced braces
- In the auto-type entry selection dialog, values in the 'Sequence - Comments' column are dereferenced now
- The time when the password of an entry was last changed is now displayed in the entry dialog on the 'History' tab page
- The {FIREFOX} placeholder and the 'URL(s)' menu ('Open with ...' commands) now support detecting the Microsoft Store version of Firefox (in addition to the regular versions)
- Added support for importing 1Password 8.7 1PUX files
- Added support for importing Key Folder 1.22 XML files
- Sticky Password XML import: added support for importing groups and expiry dates
- Steganos Password Manager CSV import: added support for the new encoding of double quotes
- Bitwarden JSON import: time-based one-time password generator settings are converted automatically now
- KeePass now checks the 'KeePass.exe.config' file and shows a warning message when finding a problem
- For development builds: added command for showing GC information
- Plugins can now load the header of a database file more easily
- Plugins can now subscribe to a master key change event
- TrlUtil: added workaround for .NET tab control focus bug

Improved:
- Moved the command 'Save Attached File(s) To' into the 'Attachments' submenu of the entry menu and renamed it to 'Save File(s) To'
- The command for saving attached files is now available only if at least one of the selected entries has at least one attachment
- The {APPACTIVATE ...} auto-type command now ignores the options 'Cancel auto-type when the target window changes' and 'Cancel auto-type when the target window title changes'
- {APPACTIVATE ...} auto-type command: if the specified window does not exist or cannot be focused, auto-type is aborted now
- Unified creation of fields with indices
- Improved database modification state and UI updating after imports/synchronizations
- In the master key creation/prompt dialogs, the [OK] button is now disabled when checking the 'Key file/provider' check box and selecting '(None)' in the combo box
- Improved drop-down menu width adjustment for certain combo boxes in the options dialog
- Improved hashing performance of protected binaries, UUIDs, ..
- Performance improvements related to empty arrays
- Improved Mono framework version detection
- TrlUtil: improved preview dialog update performance
- Various UI text improvements
- Various code optimizations
- Minor other improvements

Fixed:
- Fixed a bug that caused a minimized main window to be restored to a normal window instead of a maximized window in certain situations
- The 'Help' menu item in the entry dialog and the 'Help' button in the entry string field dialog now open the correct help sections