Patch 1.5.15

• Added: Unmanaged mode for hard drives and floppies (treated as block devices / raw access).
• Added: Tiered data cards (makkarpov).
• Added: isEquivalentTo and areStacksEquivalent to inventory controller, allowing to check if items share an oredict id.
• Added: bit32 implementation in Lua 5.3 for backwards compat.
• Added: Also handle arbitrary number types in signals and return values.
• Added: Blacklist config for recipe inputs for disassembler. Default contains fire for chainmail blacklisting.
• Added: NBT editing functionality to Debug Card (gamax92).
• Changed: Use a non-invalid default dummy item in loot generator (may help with some mods accessing that directly).
• Fixed: computer.stopped message (resulting in sockets not being closed on shutdown, e.g.).
• Fixed: Overcompensating for dig time.
• Fixed: Potential crash when machines stopped unexpectedly.
• Fixed: Potential deadlock when machines get disposed while they're running.
• Fixed: Potential division by zero in manual.
• Fixed: Potential issue in AE2 integration.
• Fixed: Potential memory leaks in server racks.
• Fixed: Potential race conditions between ServerThread and ClientShutdownThread.
• Fixed: Spelling and grammar errors within the man pages (Shuudoushi).