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
Removed BlockIdentifiers.OWNED_BLOCKS as the original got replaced with an array
Added the correct group for each supported functional block
Removed EntityFactory property from IEntitySerializer as it is provided on deserialization
Fixed setting player properties
Changed player rotation to float3
Added constructor for BlockColor with an index param
Improved Player.Exists() ~~hopefully~~
