Actually show "redefined" warnings, but only for "cdef extern" blocks, i.e. the exact case described in #1874.
Closes #1874.

Silence "redefined" warning again as it is more annoying than helpful to receive it for every pxd-defined cpdef function.
See #1874.
Closes #2013.

Repair the coercion of C string literals to C++ strings for function arguments: must create a copy for non-const arguments and can use C++ coercion for const literals.
Closes #2132.

Use pre-5.0 Tornado version as Jupyter dependency in Py3.3 since Tornado 5.0 dropped support for it.

Closes #2124.

Inline toggleDiv

Fix duplicate declaration in posix/time.pxd

Closes #2127.

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

Inlined the toggleDiv function to workaround that jupyterlab doesn't support script tags in html.

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.