NEEPMeat

IMPORTANT: ALL PLC PROGRAMS MUST BE RECOMPILED AFTER THIS UPDATE

General:

• Added lang entries for Whisper Wheat and Gland Potato blocks.
• Removed the useless Shield Implant item. It was meant for the Assault Drill, but I never got round to implementing it.
• Added the Hexapod implant. Now you can become a spider (you will have eight limbs in total).
• Added a taller blockstate for the Display Plate.
• Many documentation improvements.

PLC GUI:

• Added a button that executes the program step-by-step for debugging.
• The PLC's stack viewer indicates whether an entry is a number or a memory address.
• Language documentation can be quickly accessed inside the PLC's screen.
• Added shitty syntax highlighting for comments.
• The editor preserves the current indent level when adding new lines.

PLC:

• Values are considered true if they are not 0. -1 is now the canonical value that represents TRUE as it is the bbitwise opposite of 0. All comparison instructions now return 0 or -1 instead of 0 or 1.
• Added a new documentation loader for quick language reference.
• Server-side text parsing is now performed on a separate thread to prevent the server from freezing when large programs are compiled.
• Server-side compilation now has a 100ms timeout.
• Certain blocks can emit interrupt requests. PLCs can listen for these and temporarily stop whay they're doing to handle an event.
• The PLC now has heap memory. Memory can be allocated and freed. This mechanic will hopefully be expanded on in the future.

THORD:

• Created a new programming language: THORD. It's a bit like Forth, but differs in many important ways. It's mostly documented and is much more concise than NEEPASM, but is still stack-based.
• Added compile-time evaluation for THORD.
• Added a variety of standard words and constructs for THORD, including if-else and begin-until.

NEEPBus:

• Added the Single Button.
• Added the PLC NEEPBus Interface. The PLC could already interact with NEEPBus, but this block also emits interrupts.