Channels and instance timeline

See merge request !74

0.5.4 (2018-02-28)
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Features:

- Now stop running radio when clearing queue (#98)

Bugfixes:

- Fixed queue skipping tracks (#91)
- Now loop properly on queue when we only have one track (#95)

Import form improvements

See merge request !73

Fix #95: Now loop properly on queue when we only have one track

Closes #95

See merge request !72

Resolve "Stop radio when clearing track"

Closes #98

See merge request !71