actually query the main source if additional sources are specified
added todos
Missing test annotation
Missed mock of RIPE source
added to changes.txt
updated changes.txt for 1.67.3 release
Merge pull request #27 from APNIC-net/to-upstream-additional-source-fix

Fix for the test for additional sources
fixed doc
reformat
revamp RPSL lib, step one
(also added better error reporting)
added reverse diff (3:2 instead of 2:3) for history queries
added nserver test with IPv4 and IPv6 glue with same host
Merge branch 'master' into rdap