Error when using cython 0.28.3

[tzulberti-jampp]

There are many errors while compiling the project when using cython 0.28.3

Error compiling Cython file:
------------------------------------------------------------
...
                                    self.index[startpos,1],
                                    pybuf.len) == bkey:
                                return True
                            startpos += 1
                finally:
                    PyBuffer_Release(cython.address(pybuf))
                                          ^
------------------------------------------------------------

sharedbuffers/mapped_struct.py:4061:43: Taking address of non-lvalue (type Python object)

[klaussfreire]

That's a bug in Cython 0.27.1 and above.

cython/cython#2046