add Namespace class, basic functionality, tests
re. #26
add Namespace class, basic functionality, tests
re. #26
Merge branch 'namespace' of github.com:MurphEngineer/whdl into namespace

Conflicts:
	build.gradle
Merge branch 'master' of file:///home/mtrberzi/whdl/public into namespace
add Namespace.containsIdentifier()
Merge branch 'master' of file:///home/mtrberzi/whdl/public into namespace
nit-picking of previous work, and test cases
correct erroneous removal and ignore of buildfile
refactor containsIdentifier to isVariableDefined
remove variable search functions
use private and public scope instead
Merge pull request #54 from MurphEngineer/namespace

Added Namespace class, basic functionality, tests
Merge branch 'master' into exception-issues
This uses code from an updated public upstream