Release v2.0.1

Fixes #13, #15 and #17

Release v2.0.0

Makes library RFC 8141 compliant without dropping support for RFC 2141 URNs.

Major changes to the internal API as well as to the way URNs are created.
The generic resolver interface now allows for resolving to sets of arbitrary classes,
thus supporting not only URLs but also resolving hint data structures.

Fixes #10

v1.2.0

• Switch Oracle JDK 7 for Open JDK 7
• Add convenience method that throws IllegalArgumentException
• Enable URN resolving to set of arbitrary types