Break up and refactor clip function and remove non-specific methods

Author: Nemanja Jovanovic

src/Meshes.jl

@@ -106,9 +106,9 @@ include("winding.jl")
 include("sideof.jl")
 include("orientation.jl")
 include("merging.jl")
-include("clipping.jl")
 include("clamping.jl")
 include("intersections.jl")
+include("clipping.jl")
 include("complement.jl")
 include("simplification.jl")
 include("boundingboxes.jl")