Hamcrest v3.0

Breaking Changes

• From version 3.0, the jar distributed to Maven Central is now compiled to Java 1.8 bytecode,
  and is not compatible with previous versions of Java. See Issue #331 and
  PR #411 for details. Developers who use Java 1.7 earlier can still depend upon hamcrest-2.2.jar.

Improvements

• FileMatchersTest simplification (PR #389)
• License cleanup (PR #414, PR #415, see also #264, #355, #396, and #399)