Release 1.6.0

[nsheff]

Major release of looper that adds looper config and finalized pipestat integration, among other things.

TODO:

• [x] Release and require pipestat v0.6.0
• [x] Release and require yacman update
• [x] Update changelog
• [x] Update documentation

[donaldcampbelljr]

• [x] Pipestat documentation needs to be updated further. Contradictions in defining-a-project.md and pipestat.md

[donaldcampbelljr]

Need peppy v0.40.0 release, eido v0.2.1 appears to be sufficient

[donaldcampbelljr]

Update regarding requirements:

peppy>=0.40.0.a4
pipestat>=0.6.0a5

• Pipestat v0.6.0 will be released first.
• Peppy 0.40.0 will not be released before Looper but the alpha requirement should be sufficient as it will pull v0.40.0 when it is eventually released.

[donaldcampbelljr]

This is now ready once pipestat v0.6.0 is released.

[donaldcampbelljr]

Closes https://github.com/pepkit/looper/milestone/10