Update concept checking strategy

Range algorithm migration.

See merge request !42

# Conflicts:
#	tests/core/CMakeLists.txt
#	tests/core/image/image_ops.cpp

zip view (PR4)

See merge request !39

# Conflicts:
#	pylene/include/mln/core/image/private/image_operators.hpp
#	tests/core/image/image_ops.cpp

# Conflicts:
#	tests/core/CMakeLists.txt
#	tests/core/image/image_ops.cpp

# Conflicts:
#	pylene/include/mln/core/image/ndimage.hpp
#	pylene/include/mln/core/image/private/image_operators.hpp
#	pylene/include/mln/core/image/private/image_traits.hpp
#	pylene/include/mln/core/image_traits.hpp
#	tests/core/CMakeLists.txt
#	tests/core/image/image_ops.cpp
#	tests/core/range/zip.cpp

# Conflicts:
#	pylene/include/mln/core/image/view/transform.hpp

Move conflicting experimental features in experimental namespace.

See merge request !40

transform view (PR3)

See merge request !34