DOC: Add whatsnew for zipline 1.1.1 (quantopian#1868)

* DOC: Add whatsnew for 1.1.1

* DOC: Update type stubs

REL: Update stubs for 1.1.0 release

Merge pull request quantopian#1473 from quantopian/release-1.0.2

REL: Prepare for 1.0.2 release.

BLD: Update MANIFEST to include .pyi and .pxi.

REL: 1.0.0

REL: 0.9.0

REL: 0.8.4

REL 0.8.3

We messed up the sdist a couple times.

REL: 0.8.0

Bump version: 0.7.0rc1 → 0.7.0