Lmdb

* LMDB 0.9.18 is bundled.

* CPython Iterator.next() was incorrectly defined as pointing at the
implementation for Cursor.next(), triggering a crash if the method was ever
invoked manually. Reported by Kimikazu Kato.

* LMDB 0.9.17 is bundled.

* Transaction.id() is exposed.

* Binary wheels are built for Python 3.5 Windows 32/64-bit.

* Environment.set_mapsize() was added to allow runtime adjustment of the
environment map size.

* Remove non-determinism from setup.py, to support Debian's reproducible
builds project. Patch by Chris Lamb.

* Documentation correctness and typo fixes. Patch by Gustav Larsson.

* examples/keystore: beginnings of example that integrates py-lmdb with an
asynchronous IO loop.

* LMDB_FORCE_SYSTEM builds were broken by the GIL/page fault change. This
release fixes the problem.

* Various cosmetic fixes to documentation.

* New exception class: lmdb.BadDbiError.

* Environment.copy() and Environment.copyfd() now support compact=True, to
trigger database compaction while copying.

* Various small documentation updates.

* CPython set_range_dup() and set_key_dup() both invoked MDB_GET_BOTH, however
set_range_dup() should have instead invoked MDB_GET_BOTH_RANGE. Fix by
Matthew Battifarano.

* lmdb.tool module was broken on Win32, since Win32 lacks signal.SIGWINCH. Fix
suggested by David Khess.

* LMDB 0.9.14 is bundled.

* CFFI Cursor.putmulti() could crash when append=False and a key already
existed.