Merge tag '0.5.3' into develop

Aerodynamic Contact
chore(gulp): remove console.log
feat(actions): add new `action` event
chore(npm): add npmignore
bump: bump to 0.5.4

- Known issue: the npm package for 0.5.4 has an incorrect bower version tag
Merge branch 'release/0.5.4'
Merge tag '0.5.4' into develop

Mars Orbiter
test(scores): add tests for handling 'null' scores
fix(scores): handle null scores, use native for loops for iteration (fixes #2)
bump(0.5.5): update to 0.5.5
Merge branch 'release/0.5.5'