Write your own render script chain as a render script (requires MPDN v2.9.3 and above)
Removed debug line in Filter.cs
SourceFilter is replaceable when Append is called.
BaseSourceFilter is thus introduced for derivation purposes.
Added Nedi quadrupling in MyRenderScript.cs example.
Fixed IsDownscalingFrom/IsNotScalingFrom/IsUpscalingFrom methods.
Changed MyRenderScript.cs example to upscale using NEDI once only by default (with instructions to enable stacking NEDI until past target size).
Removed unused namespaces.
Merge pull request #14 from zachsaw/work

Work
Updated comments in MyRenderScript.cs example (to improve clarity)
Refactored DeepCloneFilter method to reduce code (with speed up bonus)
Merge pull request #15 from zachsaw/work

Work