Beta 0.5.0 Released

Beta 0.5.0 has just been released. It's rather large for a new beta build, and adds in a lot of requested features/fixes. Future beta builds will likely not be as extensive.

Changelist:
- Added partial armor/armor sectioning. Armor may be used to only partially cover a section of a spacecraft, based on length along the craft and radial sectioning.
- In combat, modules window can be expanded via the separator now, as can numerous other UI separators throughout the game.
- All weapons can now be optionally fired whilst out of range.
- Side engines on spacecrafts will now be recognized as the main engine if there is no engine at the base.
- Added ability to optionally see center of mass in ship design.
- Added ability to armor coilguns, useful for spinal weapon mounts.
- Error/warning windows are prevented from covering too much of the screen in ship design now.
- Added info on relative intercept velocity after plotting an intercept or flyby an enemy fleet.
- UI tweaks, bug and crash fixes.
- Backups for your user designs will be saved in "Backups" folder every time you start the game.