move absolute path logic to Buffer class
extract parse_color to color.cc as str_to_color, and add color_to_str
add default zero construction to units
Add a special option type LineAndFlag, use it for FlagLines highlighter
% register uses the buffer display name
Make TypedOption templates public
permit do declare regex option
add regex_option highlighter, which takes a regex option name and highlight all its matches
kak_bufname env var use display_name
Merge {Filter,Highlighter}Group in a FunctionGroup template
idvaluemap, FunctionGroup: consitfy completion methods
factor addhl/rmhl/addfilter/rmfilter completion functions
update TODO
Move parameter count validation to the ParameterParser
idvaluemap: minor style changes
use only one constructor with a default parameter for units
Minor BufferCompleter refactoring
cpp.kak: fix alt_dirs handling with more than 2 directories
kakrc: define colorscheme before sourcing user config
use a scoped edition in Repeated so that repeated actions have a single undo group