Change world time start from dawn to midnight
Merge PR #1336 by @msteiger - time tweaks
Use the inheritence cache in all getElementStyle methods.

Reduces unnecessary object allocation.
Update readme - new modules and credits update
Separate celestial events into new package
Climbing improvements
Extract celestial model into it's own class
Merge PR #1340 by @meniku - climbing improvements
Readd the old ladder (dug out of the legacy branch)
Merge PR #1337 by @flo - ui cleanup
Merge PR #1338 by @msteiger - refactor celestial / time setup
can now move away from ladder via strafing keys
Ladder is not penetratable anymore
refactorings
allow movement on both ledges, when there are two or more adjacent ledges around a corner.
Added Quadtree and Octree implementation in one.
Switched to latest version of gestalt-module.
Removed extra date/release information from version number.
Changed engine version to snapshot.
Changed core version to snapshot.
Merge pull request #1350 from immortius/versioning-fix

Switched to latest version of gestalt-module.
Merge pull request #1347 from MarcinSc/develop

Added Quadtree and Octree implementation in one.
Fix crash on remote clien by initializing the CelestialSystem on remote clients too.

The crash happend in getSunPosAngle in Skysphere.