use create if not exists, still need to fix issue for multiple insertion attempts
move xml files to /tmp dir
jmzero's iterated perfAs
update readme to reflect the known-good environment
INSERT -> REPLACE (don't crash when multiple runs are performed)
fix sql syntax in rating_functions.as_of
boring string format bug (TIMTOWTDI)
proof-of-concept flask page for showing a coder's rating change in a single match (broken for now)