Feature #2673 - Removed clickable's opacity change on hover and added an optional hover image that, if included, will be displayed when the user hovers over a clickable.
Features #2666 & #2661 : Added basic support for updating scores and objectives via triggers. Added disabled start state for triggers, which are not added to the pool of triggers until another trigger calls them via enableTriggers. Fixed incorrect order of trigger's starting/movement being processed, which resulted in move-delayed triggers executing one move early.
Task #2606 Improved comments describing the set of sample Triggers.
Feature #2661 : Improved support for objectives. Objectives now have a name property and once started, can be marked completed or failed.
update 'about' modal to display v0.5
updated images submodule so that the dolphin will show up, as long as the submodule is updated
Feature #2786 : Made changes to triggers to allow a single trigger to execute an arbitrary number of events.
Bug #2787 - Fix for key events not being re-enabled after pausing and then resuming the game. Simplified  game state logic to reduce the potential for further regressions.
Feature #2661 - Added an unstyled list of current/completed/failed objectives to the pause menu.
Quick removal of a line that should have been deleted.
Merge pull request #12 from rcatlin/version-number

update 'about' modal to display v0.5
Merge pull request #11 from rcatlin/scotts-working-branch

Scotts working branch
Merge master into merge-inventory