concurrent namespace (enabled for multithreading)
add liburcu-dev (for multithreading) to the dependencies
trying to fix the build
it seemed that Namespace_insert was using an uninitialized pointer
clean up namespace and fix a bug in testing
add performance testing for namespaces (commented out)

Currently, we achieve 4mio reads/s per core on my slowish laptop.
But beware of micro-benchmariking results.
wrap threaded test-case in ifdef
change xml parsing code to new namespace api
structure for JSON encoding
lowercae project title
minor fixes in Makefile.am relates to #107
changed travis ci bot password
Merge remote-tracking branch 'origin/master' into connection_secureChannel

Conflicts:
	examples/src/networklayer.h
	examples/src/opcuaServer.c
	src/Makefile.am
	src/ua_application.c
	src/ua_namespace.c
	src/ua_namespace.h
	src/ua_namespace_concurrent.c
	tests/check_namespace.c