Proper load/save support for Galaxy generator.
Always create new GalaxyGenerator to ensure clear state for new Galaxy.
Allow unexplored systems to become explored in game.
Persist explored state of a system.
Lua support for exploring systems.
Automatically explore system when entering it.
Ensure that cached sectors in FactionsDatabase consider persistent state.
auto-commit: translation updates
Itty bitty tweak for vs2013 compiler, make two methods protected rather than private.
Attributes for uv coords should be vec4 not vec2
Left these asserts in mistakenly when I refactored it to handle strips and loops which don't need to adhere to being a multiple of 2 vertices.
Merge pull request #3206 from fluffyfreak/fix-3204

Remove invalid asserts
Update Changelog.txt
Merge pull request #3205 from fluffyfreak/fix-3203

Attributes for uv coords should be vec4 not vec2
Update Changelog.txt
Merge pull request #3201 from lwho/system_exploration

System exploration
Update Changelog.txt
auto-commit: translation updates
auto-commit: translation updates
Expression files and instructions for building with Nix