Update 4 - Synchronize Stepper and more

This update brings in a few miscellaneous changes:

Stepper

• Added buttons to go forwards and backwards one step, you can use this for manual triggering
• Added Trigger Prev input socket that allows for stepping backwards
• Trigger Out now sends a value of 1 instead of the step index
• Added Step Index Out socket - sends out step index regardless of if step was on
• Added Step Index In socket - connect the Step Index Out from one Stepper to the Step Index In of another and they'll synchronize
• Added Fill button to turn on all steps in a single click, a counterpart to Reset
• Added Bypass button to disable responding to Trigger Prev, Trigger Next, and Step Index In sockets

Gate

• Added Open or Close input socket - allows opening and closing the gate dynamically
• Added Opened or Closed output socket - sends out 0 if the gate was just closed, sends out 1 if it was just opened

Sampler

• Added Pitch input socket
• Added Play and Stop buttons for manual sample triggering

Display

• New node
• Shows info about incoming data

Reroute

• New node
• Used for organization

Multiplier

• Now outputs floats instead of integers