Rebuild ConcaveConvexSlice & BiConvexSlice as single coherent paths (fix artifacts, add pie & full-circle support)#152

postfixNotation wants to merge 3 commits into

KoalaPlot:mainKoalaPlot/koalaplot-core:mainfrom

postfixNotation:bugfix/piechartshapespostfixNotation/koalaplot-core:bugfix/piechartshapesCopy head branch name to clipboard