[honu] mark/unmark syntax parsed through the expression syntax class
[honu] many small things: allow with syntax to bind arbitrary patterns. provide time and time-apply. make compress-dollars recurse on sub-expressions. add an implicit pattern variable that consists of the result with an ellipses depth of 1. fix the while form. allow require forms to contain mostly anything and be separated by commas.
[honu] fix lexical context for require forms. fixup the module name to replace _ with -
autobib: add #:spaces argument to define-cite that puts N spaces between each bibliography entry
autobib: document #:spaces keyword