Merge pull request volta-cli#598 from charlespierce/v0.6.6

v0.6.6

Merge pull request volta-cli#589 from charlespierce/v0.6.5

v0.6.5

Merge pull request volta-cli#570 from charlespierce/v0.6.4

v0.6.4

Merge pull request volta-cli#544 from charlespierce/v0.6.3

v0.6.3

Merge pull request volta-cli#534 from charlespierce/v0.6.2

v0.6.2

Merge pull request volta-cli#517 from charlespierce/v0.6.1

v0.6.1

Merge pull request volta-cli#508 from charlespierce/v0.6.0

v0.6.0

Merge pull request volta-cli#501 from charlespierce/v0.5.7

v0.5.7

Merge pull request volta-cli#493 from charlespierce/v0.5.6

v0.5.6

Merge pull request volta-cli#487 from charlespierce/v0.5.5

v0.5.5