Improve error message when reading vectors

Set version to 2.0.11

Set version to v2.0.10

Remove pip requirement

Increment version to v2.0.9

Set version to v2.0.8

Increment version to 2.0.7

Merge branch 'master' of https://github.com/explosion/spaCy

Merge branch 'master' of https://github.com/explosion/spaCy

Set version to 2.0.4