Removed some command line engines that shouldn't be registered
Fixed registering custom commands - registering it with the existing ones

And not storing custom block data for now

Added a way to store block groups as blueprints
Blocks can be added/removed from block groups, although it doesn't work well atm
Added some patches to the test class in an attempt to debug an unrelated issue
Added a command to test placing a block group
Added a SelectedBlueprint property to the Player class

Fixed compilation and loading issues for 2020.10.27.17.13

Fixed Assert.Equal()
Changed tests to reflect changes
Added Block property to the block event args
Completely removed sync things

And store delegates of dynamic methods invoking constructors
Tested with the automated tests

It can load certain assets (a Cube from a sample) but fails because of missing shaders
My own Cube doesn't even get that far

Removed some inputs from FakeInput

A bit hacky, but it works

Added an event for placing and removing blocks
Added a class to wrap event calls in a try-catch
Removed BlockDoesNotExistException
Made Block.GetSimBody() return null if block doesn't exist

Added center of mass
Removed delta velocities

Made GetBlockInfo() always return a reference without needing it as a parameter
Fixed Color property
Added CustomColor property for temporarily setting any color

Added API for adding more information on the debug display (not object-oriented yet)
Removed the setter for block type to ensure stability
Made the block API return defaults if the block no longer exists
Added property to check if the block exists
Made a struct for the block's color property
Added missing block IDs

Placement, movement, rotation, removal
Block looked at (in Player class), connected blocks