- document style bits in 16, 32 and 64-bit style models
- add `color_y(QEColor)` to compute the weighted light value
- publish `color_dist()`
- add `colors_init()` to initialize color support structures
- improve list of named colors:
* use CSS color names
* add X11 color names
* make grey a generic synonym for gray
- improve `qe_color_map` using ramp lookup arrays
- fix `qe_unmap_color()` bug on 4K color cube
- add custom palette to store extra named user defined colors
- improve `css_lookup_color()` and `css_get_color()`
- enumerate palette entries on `p` and `#`
- improve color scripts in `tests/`
- add `tests/getpalette.sh` to dump the current terminal palette colors
- add `tests/term-palette.sh` to compare palette colors and rgb colors
- rename font styles QE_STYLE_xxx to QE_FONT_STYLE_xxx
- rename font family QE_FAMILY_xxx to QE_FONT_FAMILY_xxx
- improve tests/16colors.pl: display bold italics combination
- improve tests/color-spaces.pl: compare true color and palette dumps
- add colortest target in Makefile to produce various color patterns
- add various utilities for color escape sequence testing:
tests/16colors.pl
tests/256colors2.pl
tests/color-spaces.pl
tests/truecolors.sh
tests/xterm-colortest.sh
tests/xterm-colour-chart.py
- use colored code-points only for syntax highlighting
- use QETermStyle and QEStyleDef internally
- convert to TTYChar attributes only for text terminal output.
- remove most CHAR_MASK and STYLE_SHIFT handling
- pass QETermStyle array to get_colorized_line mode handlers
- pass QETermStyle array to isearch_colorize_matches
- remove combine_static_colorized_line
- move color matching functions to util.c
- rename get_tty_color as qe_map_color
- improve local variable naming consistency:
DisplayState *ds, QEStyleDef *stp, QEStyleDef styledef.
