travis seems to be stuck building a missing commit, hopefully this frees it.

This compiles to fewer bytecodes and uses built-in slots instead of
method dispatch, so it should be faster.

Benchmarks show a tiny improvement (using the same benchmarks as
issue #1233, so not exactly designed to test this):

RPS

+------+------+-------+
|Size  |master|+=     |
+------+------+-------+
|1     |5.60  | 5.63  |
+------+------+-------+
| 10   |5.49  |  5.53 |
+------+------+-------+
|  100 |4.99  |   5.00|
+------+------+-------+
|  1000|3.53  |   3.57|
+------+------+-------+

The intent is to reduce network overhead for small chunk sizes withoud adding much overhead for larger sizes.

Fixes #1233.

Only issue the ssl MonkeyPatchWarning if we can be pretty sure there will be problems

This increases the false negative chances, but decreases the false positives substantially.

Fix a typo in pywsgi.py
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Fixes #1236

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* Switch off prospector, go back to plain pylint.

prospector wasn't working on CI for some reason.

Fix the outstanding pylint errors.

* Explicitly request pylint 2 on Python 3

* Also need to update astroid.

* pylint warning generated on Travis (case-sensitive filesystem.)

* Sleeping updates the loop's current time always.

That had been disabled for libuv, but now that we run timers in our own code that's not a concern anymore.

Fixes #1227.

* Try Python 3.5.5 because of the weird Illegal Instruction crash we suddenly see with 3.5.4

* Increase the value; test_sendall_timeout was often failing to actually timeout.

* Really python3.5

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Allow weakreferences to Queue objects. Fixes #1217.

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Fix gevent.os.nb_write/read not always closing the IO event the opened, which is a problem on libuv.

Also fix the formatting in changelog_1_0.rst so it renders legibly.

I checked with restview --long --pypi and the long description still
renders nicely, as do the pages created by sphinx

I thought the use of .. include:: would make README.rst still render
with all its contents, but sadly github doesn't enable
that (https://github.com/github/markup/issues/172)

 Let Event have weak references.

Catch the ValueError that sys._getframe() can raise when there are no Python frames.

This can happen in the embedded case, when the CPython C api is used to directly call Greenlet.spawn, which itself is now implemented in C.

Fixes #1212.

Move the __weakref__ to the base class for Cython because we did see a failure in 3.6 too: https://travis-ci.org/gevent/gevent/jobs/379718754#L753

Fixes #1211

Note that this can crash on CPython 3.7b4; see https://github.com/cython/cython/issues/2270

Refs #1207 and #1209.

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Run leakchecks on Python 3.7.

Fix ABCs in the MRO of gevent.local. Fixes #1201

Try to make it take less than the 200s timeout.