Audio and Timing:

• Greatly improved downmixing for audio with more than 2 channels
• Also move karaoke markers after the dragged marker if Ctrl is held down (#1557)
• Improve Unicode support in the karaoke split/join bar
• Report a more useful line number for bad lines in the Timing Post Processor (#1596)
• Default to only showing the maximum in the waveform view
• When zooming the audio display with the scroll wheel, zoom into the mouse's position rather than the center of the display
• Significantly improve the automatic matching in the kanji timer
• Skip empty lines when copying karaoke timing

• Fix crash when something other than a string is passed to error()
• Match HTML colors in a way that actually works in extract_color (#1575)
• Implement the "coloralpha" automation control type
• Switch the re module from wxRegex to boost.regex and fix a bunch of bugs
• Drop support for non-UTF-8 scripts
• The subtitles object can now be iterated over with ipairs as if it were a normal table
• Add native support for MoonScript
• Add support for using standard button ID in dialogs (#1609)
• Load autoloaded automation scripts in parallel for slightly faster startup
• Improve error reporting and actually include a stack trace
• Double the size of the log window
• Make it harder to break the included modules by defining a global function with the same name as a lua built-in
• Trying to log a string which could be converted to a number now works correctly
• Return full paths from aegisub.dialog.open and aegisub.dialog.save rather than just the filename

• Create new files each time when autosaving so that opening an old version of a file after a crash doesn't overwrite the newer autosaved version (#1155)
• Add a dialog for opening autosave and crash recovery files rather than having to dig around in %APPDATA%Aegisub (#781)

• Case insensitive find now works for all languages rather than just things sufficiently English-like (#1342)
• Add an option to skip override tags (##104)
• Add an option to skip comments (##683)
• Actually obey the "In Selection" option for things other than Replace All if multiple lines are selected
• Search from the position of the character rather than the position of the last thing found
• Remove the "update video" option since it didn't actually do anything

• Improve reporting when a font is missing a whitespace character used in the script (#1553)
• Fix some cases where the wrong font was being selected
• Show a more useful error message when the style used by a subtitle doesn't exist

• Significantly reduce the performance penalty of ASS Attachments
• Vastly cut down on memory usage with large subtitle files
• Speed up committing changes a bit
• More work is done on background threads to avoid blocking the UI
• Improve indexing performance
• Prefetch the font list for the style editor to make it open much faster on systems with large numbers of fonts installed

• Add partial HiDPI support
• Use the native placeholder text functionality rather than the custom logic which worked slightly differently
• Make it sort of possible but awkward to set hotkeys (#1589)
• Properly handle dead keys in the edit box (but still not IMEs)
• Fix a bunch of CoreText warnings on 10.9
• Sign the binary to avoid Gatekeeper warnings on 10.8+

• Updated from hunspell 1.2.1 to 1.3.2 on Windows
• Improve spellchecker word splitting (#1206)
• Allow removing added words from the dictionary (#1184)
• Add an option to ignore uppercase words (#1460)

• Fix changing the MRU limit for subtitle files (#1592)
• Actually select the correct lines in the select overlaps macro (#1594)
• Fix loading keyframe files with Windows newlines on non-Windows platforms
• Add support for ffmpeg/avconv's keyframe format
• Add support for the scroll wheel to the video slider
• Eliminate a bogus limit of 100 for a bunch of rarely-used options
• Add Backspace to the keys that commands can be bound to (#1631)
• Add support for the Windows 7 taskbar progress bar
• Make saving transient UI state in the file optional (#1535)
• Improve support for locales which use a comma as the decimal separator

• The buttons in the main edit box can be hotkeyed
• By default, Alt+1-4 activate the appropriate color buttons
• Add alpha to the color picker dialog
• Add a character counter which shows the number of characters in the longest line of the currently selected subtitle
• Add an option to show the contents of the current line when it was first selected
• Make syntax highlighting better match VSFilter's parsing
• Always add the spellchecker language list to the context menu
• "Split line at cursor" can be hotkeyed
• Change the Effect box to a combobox like the Actor box (#1461)
• Be less dumb when subtitles lines are pasted into the edit box

• Insert new lines before/after the active line rather than the first selected line
• The grid can be scrolled past the end of the file
• Paste over now replaces the selection if multiple lines are selected, since that's what most people seem to expect it to do
• Do a better job of picking a new active line after deleting lines (#1595)
• Only paint the margin values in the grid if they're non-zero
• Replace "Duplicate and Shift by 1 Frame" with "Split lines at video position"

• Drop support for ASS2 since it didn't really work and no one used it
• Drop support for the "Collisions" property in ASS file since VSFilter doesn't support it
• Fix loading subtitles from Matroska files without track names
• Improve behavior when character set detection fails
• Add an option to not skip blank lines when importing plain text files
• Fix double-prompting to pick a character set in some cases (#1512)
• Make the SRT parser more forgiving of malformed files (#1614)
• Support loading subtitles from improperly concatenated matroska files
• Fix some issues with writing EBU STL files

• Add Galician translation by Nuria Andión
• Actually add the translations to the desktop file on linux

• Drop MPC-HC VSFitler and default to xy-VSFilter now that CCCP has switched
• Honor the color matrix tag from the subtitles file when appropriate (#1649)
• Update the title of the detached video dialog when videos are opened (#1607)
• Add the command video/subtitles_provider/cycle, which can be hotkeyed to quickly switch between VSFilter and libass on Windows

• Fix some cases where tags other than the one(s) being actively manipulated were being modified (#1513)
• Update all selected rows in the clip tools rather than just the active line
• Lock aspect ratio in the scale tool when alt is held down
• Add box selection to the move mode of the vector clip tool (#1404)
• Significantly speed up dragging lots of vector clip control points
• Make the X/Y rotation grid much bigger
• Apply the line's shear to the x/y rotation grid

Audio and Timing:

• Greatly improved downmixing for audio with more than 2 channels
• Also move karaoke markers after the dragged marker if Ctrl is held down (#1557)
• Improve Unicode support in the karaoke split/join bar
• Report a more useful line number for bad lines in the Timing Post Processor (#1596)
• Default to only more...