Support 3367
[*] Update CMakeLists: dll -> pyd
[*] Rename src to CellFrame to get rid of symlink and fix copying of
__init__.py file to package folder
[*] Uncomment content of __init__.py
Edited by Sergei Rashitov
[*] Update CMakeLists: dll -> pyd
[*] Rename src to CellFrame to get rid of symlink and fix copying of
__init__.py file to package folder
[*] Uncomment content of __init__.py