Add RSSExtension extension

A loadable module version of the Robust Statistics Segmenter module
fixed key bindings, removed curvature penalty, gave user access to control the number of contour iterations
fixed key bindings, removed curvature penalty, gave user access to changing the number of iterations for the contour evolution
Merge branch 'update-KSlice' of github.com:ikolesov/ExtensionsIndex into update-KSlice
Merge branch 'update-KSlice' of github.com:ikolesov/ExtensionsIndex into update-KSlice
fixed 3d surface evolution by changing to CV
Merge pull request #430 from fedorov/update-Reporting

Update Reporting
update RSS commit version
Add RSS Extension
added soft/hard constraints and allowed preemptive erasing functionality
ENH: Updated DataStore.s4ext file
Merge pull request #437 from charles-marion/update-DataStore

ENH: Updated DataStore.s4ext file
Merge pull request #436 from ikolesov/update-KSlice

Update k slice

Compare link is https://github.com/pkarasev3/kslice/compare/8dda953...0e191e5
BUG: fix a compilation error on Mac
Merge branch 'add-RSSExtension' of github.com:gaoyi/ExtensionsIndex into add-RSSExtension

Conflicts:
	RSSExtension.s4ext
Merge pull request #439 from gaoyi/add-RSSExtension

Add rss extension - Mac build error should be fixed
Added numeration in workflow steps collapsible buttons
fix error in cmake
Merge pull request #441 from ikolesov/update-KSlice

fix error in cmake
Merge pull request #440 from paulcm/update-LongitudinalPETCT

Added numeration in workflow steps collapsible buttons