urls: fix wikipedia url detection with parenthesis (William Casarin)

tests: add url parens tests (Joel Klabo)

test: move existing url tests to UrlTests (William Casarin)

make: add tags target (William Casarin)

todo: add local todo helper (William Casarin)

build: fix some build issues with the last revert (William Casarin)

pushed to damus:refs/heads/master

http://git.jb55.com/damus/commit/53e9269da6be28128d083f13cf3ac7f55f1266af.html