Omero-cli-render

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* Fix channel re-activation when render set is passed without `--disable` [40](https://github.com/ome/omero-cli-render/pull/40)
* Fix REAMDE and usage [41](https://github.com/ome/omero-cli-render/pull/41)

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* Upgrade to Python 3 and consume new omero-py project [31](https://github.com/ome/omero-cli-render/pull/31) [#32](https://github.com/ome/omero-cli-render/pull/32) [#37](https://github.com/ome/omero-cli-render/pull/37) [#38](https://github.com/ome/omero-cli-render/pull/38)
* Refactor rendering settings parsing [34](https://github.com/ome/omero-cli-render/pull/34)

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* Actively close rendering services when applying `render set` to a
collection of images [29](https://github.com/ome/omero-cli-render/pull/29)

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* Declare `PyYAML` as a package dependency
[28](https://github.com/ome/omero-cli-render/pull/28)

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* Make output of `render info --style yaml` subcommand yamllint compliant
[26](https://github.com/ome/omero-cli-render/pull/26)
[27](https://github.com/ome/omero-cli-render/pull/27)

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* Drop Python 2.6 support
[17](https://github.com/ome/omero-cli-render/pull/17)
* CLI render version 2: use start/end for setting channel rendering window
instead of min/max [15](https://github.com/ome/omero-cli-render/pull/15)
[22](https://github.com/ome/omero-cli-render/pull/22)
* CLI render version 2: add support for settings default z/t planes
[23](https://github.com/ome/omero-cli-render/pull/23)
[24](https://github.com/ome/omero-cli-render/pull/24)
* Add logic for render version detection logic
[20](https://github.com/ome/omero-cli-render/pull/20)
* Review integration tests
[21](https://github.com/ome/omero-cli-render/pull/21)