Closes #2128.

Re-enable "auto late includes" based on a preliminary directive. We have the feature, so allowing its use won't hurt, as long as users are aware that they will have to change their code later.
See #2079.

Work around BPO-32973: CPython 3 can rerun the module PyInit function if the extension module is re-imported under a different name.
https://bugs.python.org/issue32973

Declare variable at start of block

Do not hijack "@asyncio.coroutine" to make async-def functions iterable, since this is really just a legacy feature that users should not overuse. Instead, provide a dedicated and explicit "cython.iterable_coroutine" directive.

Fix crash during contiguity check in Pythran buffer type checking code: loop was accidentally reversed in refactoring.

Correct the fallback code for the builtin next() when slot usage is disabled (was missing a fallback).
Closes #2116.

Avoid exception type check in next() implementation if we don't have a default value to return anyway.
See #2116.

Rename unit test method calls from "assertEquals" to "assertEqual" to fix a a deprecation warning in Py3.7.

Explicitly re-allow memoryviews in default argument structs after disallowing them in structs generally.
Closes #2114.

documentation __dealloc__ should be def not cdef

Add cimport-from-pyx to command line

Add FIXMEs to C-API functions that changed in Py3.7 but are not free of risk to adapt to because the error case returns ((unsigned long)-1) now instead of ((long)-1).

Disable yield-from integration test with asyncio in Py3.7 since asyncio Python coroutines are no longer iterable.

Closes #2111.