Added another example; started rewriting class linearization
Removed unnecessary debug printlns
Refactoring and better class linearization
Travis configuration
Greatly improved (fixed?) linearization order
removed tests for unimplemented features
Removed debug lines
updated example
renamed virtualContext to family
Merge branch 'refs/heads/2.10'

Conflicts:
	.travis.yml
	macros/src/main/scala/VirtualClasses/Macros.scala
	project/Build.scala
Manually fixed deprecation issues