v2.0 - April 2017

Breaking changes from v1 to v2:

• Changed spherical coordinate system to match physics conventions
  • Off is upward, On is downward
  • Z up/down, Y left/right, X toward/away
  • Theta ranges from 0 (up) to 180 (down)
  • Phi=0 points toward user, Phi=90 points rightward
• Swapped the Off/On symbols for both the X-controls and Y-controls
  • X-On is a circled plus (matches the NOT gate, since they interchange)
  • X-Off is a circled-minus
  • Y-On is a circled cross
  • Y-Off is a circled slash
  • Serialized ids did not change; old circuits will load correctly

Notable User Changes:

• Bug fixes:
  • Fixed reversed-input gates not reversing
  • Fixed input gates not drawing control lines into custom circuit gates
  • Fixed drawing control lines to custom identity operations
  • Fixed permute-wire drawings not fully erasing covered wires
  • Fixed bad URLs being created for custom gates with '%' or '&' in their names
• Toolbox changes
  • Hid exp(iUt) gates
  • Hid 16'th-root gates
  • Hid shift-cycling gates
  • Moved all X/Y/Z gates to top
  • Added parametrized X/Y/Z gates
  • Added comparison gates
  • Added multiplication gates
  • Added 'set default input' gates
  • Added modular arithmetic gates and Input R
  • Added interleave gates
• Appearance:
  • Bottom toolbox has a fourth row
  • Input gates shaded gray
  • Bit-rotate gates show a rearranged-wire symbol
  • Bit-permutating gates show the wire re-arranging even when controlled
  • Increment/Decrement gates now show "+1" and "-1" instead of "++" and "--"
  • Sample gate shows an extra decimal ket in its tooltip text
  • Added 'Shor Period Finding' example
  • Added version indicator
  • Gates no longer show a 'resizable' symbol
  • Phase gradient gates now show "e^iπ%" instead of incorrect "Z^#"

Notable Dev Changes:

• Improved startup time
  • Added mutation-based GateBuilder and used it instead of replacement-based Gate.with methods
  • All resizable gates now give matrix functions instead of spending time making matrices
  • Avoided creating webgl context twice
  • Switched shaderFromBitPermutation from Seq to a raw loop
• Support for multi-line gate symbols
• Support for clickable gate buttons
• Separated gate effect properties into 'actual' (for simulating) and 'known' (for drawing/testing)
• Commented the Gate class
• Extracted unit-tested methods from control-line-drawing code
• Added 'knownPermutation' gate effect, and added tests for validating actual effect against permutation
• Added ketInputGateShaderCode/ketInputGateArgs, unifying how gates get inputs
• Added serialized 'param' property to gates