Add BufCloseFifo hook and use that to remove fifo directories
Use -group rather than -id in hooks to mirror highlighters closer
Complete hook documentation in README
make.kak: display error description in the status line on errjump
Add a %val{...} expand type

%val{name} gives access to values given in shell through $kak_<name>
make.kak: Add :errnext and :errprev for jumping between errors
Merge branch 'master' into hierarchical-highlighters
Minor code cleanup in highlighters
Color Default now means 'keep as is' for most highlighters
Add a line_option highlighter that highlight the line stored in an int option

Use it to highlight the current error in the *make* buffer