Added squelch Erosion.cs.
Fixed work squelch buildup.
Added new squelch - Disclosure.cs.
Added squelch - Closing.cs.
Added squelch MorphologicalGradient.cs and touch up work with progress bar.
Added squelch BlackHat.cs.
Added squelch ConventionalBuildup.cs.
Added MedianFilter.cs and GaussianFilter.cs but GaussianFilter.cs work with mistakes.