Optimized float4 round() function, performance increased considerably in some cases. Optimized internal filter steps building function. Added algorithm modeling and complexity calculation functions. Added additional algorithm variation with differing efficiency. Added automatic best algorithm selection. Improved resizing quality at image edges. Made downsizing use arbitrary factors for a higher efficiency in many cases. Added 2 intermediate resizing parameter sets. Moved sub-pixel offset parameters to CImageResizerVars.