Fixed rare crash on ladders.
Added config file with reach, increased mining time and block outline settings.
Mirror size has been renamed to reach.
Mirror and array abide by the new reach settings.
Added reach counter to array UI (reach = count * max offset).
If reach is 0 (as can be set in config), the UI will be disabled.
Added the ability to show the white block outline on the block you place, in addition to blocks placed by mirror/array.
Added the ability to disable increased mining time and to change its percentage in the config.