Merge pull request #115 from eile/master

PersistentMap and opt: avoid alloc+copy in make_UUID()
Merge pull request #117 from eile/master

Release notes for #115
Merge pull request #119 from eile/master

URI improvements
Provide URI string to users
Merge pull request #120 from tribal-tec/master

Provide URI string to users
Provide const char* ctor for URI
Merge branch 'master' of https://github.com/Eyescale/Lunchbox

Conflicts:
	lunchbox/persistentMap.cpp
	lunchbox/uri.cpp
	lunchbox/uri.h