writer: make sure we don't write a note if we already have it (William Casarin)

test: "fix" search test (William Casarin)

util: add print_util.h for various printing tasks (William Casarin)

search: fix another newest-first bug (William Casarin)

add lmdb data stuff to gitignore (William Casarin)

pushed to nostrdb:refs/heads/master

http://git.jb55.com/nostrdb/commit/b20928651fea142daaf639b935bee0bf9bb79d8a.html