upgrade

Imports

• github.com/pkg/errors
• github.com/tj/kingpin
• github.com/tj/go/env
• github.com/apex/up/internal/util
• github.com/tj/go-update
• github.com/apex/up/internal/progressreader
• github.com/apex/up/internal/stats
• github.com/tj/go-update/stores/github
• github.com/apex/up/internal/cli/root
• github.com/apex/up/internal/userconfig
• github.com/tj/go/term
• github.com/tj/go-update/stores/apex
• github.com/tj/go/http/request

Standard library imports

• runtime
• time