Upgrade to airbase 28
Cleanup tests
[maven-release-plugin] prepare release 0.7
[maven-release-plugin] prepare for next development iteration
Merge branch 'master' of https://github.com/airlift/airline
Remove unecessary Assert. due to static import
Merge branch 'master' into improved-help

Conflicts:
	pom.xml
	src/test/java/io/airlift/airline/TestHelp.java
	src/test/java/io/airlift/airline/command/CommandTest.java

Brings the test cases into line with master - removes Assert. and use
static imports