v1.6.1

This release fixes an issue in which annotations such as @foo-bar
and @foo- were incorrectly recognised as valid, and both erroneously
parsed as @foo.

Any annotation with @name-* format will now silently be ignored,
allowing vendor-specific annotations to be prefixed with the tool
name.

Total issues resolved: 3

• 165: Update the composer branch alias thanks to @mikeSimonson
• 209: Change Annotation::value typehint to mixed thanks to @malarzm
• 257: Skip parsing annotations containing dashes, such as @Foo-bar, or @Foo- thanks to @Ocramius