Add python 3 support.

Signed-off-by: David Black <dblack@atlassian.com>
Fix the broken airspeed/api.py module.

Signed-off-by: David Black <dblack@atlassian.com>
Support the alternative 'not' operator.

Signed-off-by: David Black <dblack@atlassian.com>
Remove duplicate test case.

Signed-off-by: David Black <dblack@atlassian.com>
Merge pull request #12 from dbaxa/fix_alt_not_operator

Fix alt not operator