Basic CoAP header structure and option encoding
Added missing Makefile
Updated header bits according to draft-ietf-core-coap-01pre5.
Basic support for sending, retransmissions.
fixed bug in name resolution
transaction handling
added handling of incoming messages on "user layer"
some code cleanup
even more code cleanup
use -std=c99 (except main.c because of getaddrinfo())
new targets distclean, dist
hint for Solaris builds added
fixed stack corruption in send_request()
create library
pass URI for get request on command line
added usage info
code cleanup (removed some GCC extensions from pdu.h)
macros for improved handling of coap_opt_t objects
helper functions for pseudo-FP encoding according to draft-bormann-coap-misc-04
added examples subdir with tiny fake sensor
fixed dist target
increased version number
multicast example: main process joins group ff02:2001::1
added string representation of encoded value to payload of sent pdu
bugfix: wrong protocol level for hop count change
use site-local multicast group
fixed byte order
improved debug output