manual: remove ECL limitations which are no longer valid
manual: remove ECL limitations which are no longer valid

dkochmanski/cffi,3b/cffi,dkochmanski/cffi,cffi/cffi,stassats/cffi,cffi/cffi,stassats/cffi,dkochmanski/cffi,cffi/cffi,stassats/cffi,3b/cffi,3b/cffi