node_graph: add trigger links
node_graph: some improvements
add support for md5
update utils
reduce dbg output
remove unused ubx_utils
webif: fix bug that prevented default port 8080 to be used
C API support for module loading/unloading
C API support for module loading/unloading
node_cleanup: stop, cleanup, free all blocks and modules
lua: use C-API module handling
examples/c-only: add some documentation
doc updates
add documentation field to ubx type, port and config
lfds/cyclic: strongly typed
file_logger: add support for direct logging of interactions
Compute and display MD5 type hash.

This will be used to efficiently and uniquely identify types across
process boundaries.
mqueue iblock: added typed version and some testing
webif: improve errmsg
file_logger: fix "error object is not a string"

This was caused by a non-existing stop hook. The strict module
complained about this in a very unhelpful way when this operation was
looked up by call_hook.