Structura minor release
Changelog:
- fixed crash when shooting enemies
- move the attack timer to a better location on the screen
- shell gates text hover
- on game over only offer to quit , a new game can be chosen from the launcher
- stack transfer operation menu
- proper cleanup on enemy death
endgame work (work in progress):
- added mothership nodes, each shell gate has 3 , initially cloaked
- message from command when arriving on the last shell
- trigger to decloak all mothership nodes
- if all mothership nodes are destroyed, the mothership will be decloaked
- the mothership will be a boss fight (still to do)