Kinto-dist

**Bug fixes**

- Do not send ``ReviewApproved`` event when signing a collection that is already signed (Kinto/kinto-signer174)

**Bug fixes**

- Allow ``canonical_json`` to work with iterators. (Kinto/kinto-signer167)
- Fixed inconsistencies in ``ResourceChanged`` produced by Kinto signer (Kinto/kinto-signer169)
- Update e2e.py to be robust against kinto_client returning an iterator in Python 3. (Kinto/kinto-signer165)
- Send kinto-signer before committing since some database may have to be performed
in the subscribers (Kinto/kinto-signer172)

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Kinto
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- Add views for browsing a collection history (196)
- Updated kinto-http to v2.3.0.
- Activate the signoff plugin to allow triggering a signature from the Admin.

kinto-signer
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**New feature**

- Events are now generated on the monitor/changes collection (41).

**Bug fixes**

- Don't do anything during a ``migrate`` command (fixes 43).

**Internal changes**

- Get rid of six

kinto-megaphone
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Kinto
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