Experimental implementation of linked mode editing for completed
argument lists
much more robust impl of context info for parameter lists
add a TODO and remove dead code
highlighting of current parameter in context info, and refactorings
ooops add missing files
remove breaky workaround
proposals in linked mode!
make ctrl-space display the parameter info
fix basic proposals (ones with no args)
fix selection for anon arg completions
fix link mode for anon function arg proposals
small fix
small fix for empty param lists
fix highlighting of abbreviated typed args
update all archives