feat: Refactor dimensional values and expose the bitRatio all the way to the function node

fix: Added test suite for arrays and inputs for webgl and webgl2
fix: Rename "floatOutput" feature to "precision".  Values can be "unsigned" or "single"
fix: Add input and Input to typings
fix: Use Int32Array for input.size

Author: robertleeplummerjr

README.md

@@ -110,7 +110,7 @@ Settings are an object used to create a `kernel` or `kernelMap`.  Example: `gpu.
 * wraparound: boolean
 * hardcodeConstants: boolean
 * floatTextures: boolean - input/working textures use float32 for each colour channel
-* floatOutput: boolean - output texture uses float32 for each  colour channel
+* precision: 'single' or 'unsigned' - if 'single' output texture uses float32 for each colour channel rather than 8
 * fixIntegerDivisionAccuracy: boolean - some cards have accuracy issues dividing by factors of three and some other primes (most apple kit?). Default on for affected cards, disable if accuracy not required.
 * functions: array or object
 * nativeFunctions: object