Make doctest output easier to parse

Verbose mode w/ doctest drowns out actual failures.
Add note to runtests.sh about doctest failures
set -e on runtests.sh and turn tests back on :)
Fix #34

We now exit 1 iff the pytests fail.
Merge branch 'master' into allow-monkey
Fix color escaping in runtests
Merge branch 'master' into allow-monkey