jCoAP crashed when multicast was not allowed on a machine: Added Exception Handler, instead of a system failure, a warning is shown that jCoAP runs without multicast support
fixed test setup: some static modifiers crashed the test and thus the build
updated jcoap-core version to 1.1.2
updated dependencies in all projects
renamed all maven artifacts with a prefix "jcoap-" as otherwise generated jars are not identified with jcoap
removed all snapshot endings in version numbers
set all .settings to be ignored not just in root