adjust file suffixes in mgth tests
add suppression for cairo leaks
add manuals to web page
fix navigation in GFF3 validator form
use correct link
change footer on website
add snpper.lua
fix release date
add gt_region_mapping_get_sequence_length()
implement additional cases
make sure GtSeqCol is loaded
fix sorting when mixing MD5/non-MD5 seqids
remove generated docs from repo
extend clean targets for documentation
docu formatting