message: Make createIndicesForQuads public, support uint32
diff: /**
  * Generic Mask Stack data structure
  *
  - * @memberof PIXI
  + * @memberof PIXI.utils
  * @function createIndicesForQuads
  - * @private
  * @param {number} size - Number of quads
  - * @return {Uint16Array} indices
  + * @param {Uint16Array|Uint32Array} [outBuffer] - Buffer for output, length has to be `6 * size`
  + * @return {Uint16Array|Uint32Array} - Resulting index buffer
  */
  -export function createIndicesForQuads(size)
  +export function createIndicesForQuads(size, outBuffer = null)
  {
  // the total number of indices in our array, there are 6 points per quad.
  -
  const totalIndices = size * 6;
  - const indices = new Uint16Array(totalIndices);
  + outBuffer = outBuffer || new Uint16Array(totalIndices);
  +
  + if (outBuffer.length !== totalIndices)
  + {
  + throw new Error(`Out buffer length is incorrect, got ${outBuffer.length} and expected ${totalIndices}`);
  + }
  // fill the indices with the quads to draw
  for (let i = 0, j = 0; i < totalIndices; i += 6, j += 4)
  {
  - indices[i + 0] = j + 0;
  - indices[i + 1] = j + 1;
  - indices[i + 2] = j + 2;
  - indices[i + 3] = j + 0;
  - indices[i + 4] = j + 2;
  - indices[i + 5] = j + 3;
  + outBuffer[i + 0] = j + 0;
  + outBuffer[i + 1] = j + 1;
  + outBuffer[i + 2] = j + 2;
  + outBuffer[i + 3] = j + 0;
  + outBuffer[i + 4] = j + 2;
  + outBuffer[i + 5] = j + 3;
  }
  - return indices;
  + return outBuffer;
  }
  