v1.5.7

Changelog

13d2bdd .goreleaser.yml: Update manifest format for new GoReleaser.
314a72a Release yak version 1.5.7.
2696abf Merge pull request #104 from redbubble/paul/better-command-completions
03d2de4 README.md: Add example of '--' in commands.
96e226c README.md: Update bit about '--'.
a09cffd cmd/root.go(rootCmd): Modify description to call it "command", not "subcommand".
6f89db1 static/completions/yak.zsh: Improve completion of commands after --.
db1ac13 Merge pull request #102 from redbubble/mp-use-okta-sessions
bcdd418 Remove CLI flag for now, make config-only
5b76430 Limit how long we cache our Okta session to a day by default
99dc9ef Remove unneeded gob re-initialisation check
6180520 Refresh our session as a way to test it between runs & add better debug output
ec1a8f1 Add basic logging / verbose flag for debugging caching
d6859b1 go mod tidy
d176318 De-dup gob register
457d523 Remove pps
55cd331 Cache the session instead of the SAML payload
a428423 Rename parameters in cache.Check
7641d00 Rename AssumeRoleFromCache (it doesn't always use cache)
801ad1e Unify assume role steps in print_credentials.go & shim.go
de6249f Scrappy WIP on prototyping session support
e156536 Merge pull request #103 from redbubble/mp-github-actions
c9fe82c Github actions
fc9ce48 swap out go-passe for gotestsum, avoid polluting go.sum in travis