Updated: mintty 2.9.0

[Thomas Wolff <towo@towo.net>]

I have uploaded mintty 2.9.0 with the following changes:

Highlights (details see below)
   * Background image and texture support.
   * Enhanced multi-monitor DPI handling.
   * Underline styles and colours, CMYK colour specifications.
   * Outer scrollbar mode, xterm-compatible.
   * Enhanced text selection mouse support.
   * Enhanced quick window switching.
   * Tweaked start error handling.
   * Tweaked WSL support.

Character attributes and rendering
   * Support for colon-separated SGR sub-parameters (ISO/IEC 8613-6) 
(xterm 282):
   * SGR escapes for ISO/IEC 8613-6 RGB, CMY, CMYK, and indexed colour 
formats.
   * DECRQSS uses SGR sub-parameters for colour specifications (xterm 331).
   * SGR 4:1...4:5 for underline styles solid, double, wavy, dotted, dashed.
   * SGR 58/59 for underline colour (kitty, iTerm2).
   * Fixed (almost) selection highlighting of emojis.
   * Drawing Unicode Block Elements which are broken in many fonts (#264).
   * Fixed initial bold as font suppression glitch (mintty/wsltty#103).

Window control
   * DECSET 30 to enable/disable outer scrollbar (like xterm) (#159, ~#262).
   * DECSET 1046 enables/disables alternate screen switching (xterm 331).
   * Cursor style modes DECSET 12 (AT&T 610) (xterm 331) and SM 33/34 
(Wyse).

Scrollbar
   * Fixed scrollbar toggle (Ctrl+Shift+O) from forcing scrollbar to the 
right.
   * Preventing font zooming after scrollbar toggle (Ctrl+Shift+O).

Window layout
   * Background image or texture support (#18, #666).

Multi-monitor support
   * Using Windows DPI handling V2, avoiding fluttering (#774, #470, 
#492, ~#566, ~#547).

Text selection
   * Drag-and-drop selection after focus click enabled by combined cell 
and time distance (#717).
   * Only suppress focus-click selection if focus reporting disabled or 
mouse reporting not effective (#717).
   * Ctrl+mouse-move hovering underlines URLs and filenames (#173).
   * Selection highlighting can also indicate selection size (#660).

Window handling
   * Revised Ctrl+(Shift+)Tab window switching (#773).
   * Ctrl+Ctrl+(Shift+)Tab for window switching including iconized 
windows (#735).
   * Win+Shift move coupling of tab sets if SessionGeomSync ≥ 2 (#600, 
#699).

Configuration
   * CMY(K) colour specifications in OSC sequences and config file.
   * Option Background and OSC 11 to set background image or texture 
(#18, #666).
   * Option SelectionShowSize to enable selection size indication (#660).

Themes management
   * Fixed syntax error in `mintheme` tool (#764).
   * Option `mintheme -d -q` for decimal colour format (#718).
   * Supporting `mintheme` tool on WSL.
   * Options `mintheme -p` and `mintheme -t` to set background picture 
or texture.
   * Options `mintheme -s` and `mintheme -S` for theme visualization and 
comparison.

Other
   * Updated Emoji data and built-in width data to Unicode 11.0.
   * Enabled OSC 7 current directory injection for Ctrl+click in WSL 
(mintty/wsltty#104).
   * Reporting start error (exit status 255) (#745).
   * Changed start error exit code from 255 to 126 (#745).
   * Fixed slowdown of Character Info mode if Unicode data are not deployed.
   * Option --WSLmode to tune behaviour for WSL distro but not launch 
(mintty/wsltty#99).
   * Clarified additional configuration requirements for option 
TaskCommands in the manual.

The homepage is at http://mintty.github.io/
It also links to the issue tracker.

------
Thomas