Changes to go-imap API

[galaxor]

It looks like the go-imap API has changed, and so "go get -u github.com/emersion/neutron" doesn't work anymore.

I started to try to fix it, but it looks like you (emersion) are the maintainer of go-imap, so you might be able to do it faster or more correctly than I am.

root@fb04f9e472e0:/go# go get -u github.com/emersion/neutron
# github.com/emersion/neutron/backend/imap
src/github.com/emersion/neutron/backend/imap/attachments.go:46:21: cannot use items (type []string) as type []imap.FetchItem in argument to c.Client.UidFetch
src/github.com/emersion/neutron/backend/imap/attachments.go:56:55: cannot use "BODY[" + partId + "]" (type string) as type *imap.BodySectionName in argument to data.GetBody
src/github.com/emersion/neutron/backend/imap/conn.go:105:13: invalid operation: c.Client.State & imap.ConnectedState (mismatched types func() imap.ConnState and imap.ConnState)
src/github.com/emersion/neutron/backend/imap/conn.go:154:34: c.Client.Mailbox.Name undefined (type func() *imap.MailboxStatus has no field or method Name)
src/github.com/emersion/neutron/backend/imap/conn.go:174:21: c.MailboxUpdates undefined (type *conn has no field or method MailboxUpdates)
src/github.com/emersion/neutron/backend/imap/conn.go:185:21: c.Expunges undefined (type *conn has no field or method Expunges)
src/github.com/emersion/neutron/backend/imap/conn.go:286:34: c.Client.Mailbox.Name undefined (type func() *imap.MailboxStatus has no field or method Name)
src/github.com/emersion/neutron/backend/imap/events.go:39:22: c.Client.Mailbox.Name undefined (type func() *imap.MailboxStatus has no field or method Name)
src/github.com/emersion/neutron/backend/imap/events.go:44:32: cannot use []string literal (type []string) as type []imap.FetchItem in argument to c.Client.Fetch
src/github.com/emersion/neutron/backend/imap/events.go:44:33: undefined: imap.UidMsgAttr
src/github.com/emersion/neutron/backend/imap/events.go:44:32: too many errors

[galaxor]

Also: I'm not very familiar with go. Is there some way to tell it that neutron depends on a particular version or branch of go-imap? That seems like a more sustainable way to handle this in the future. Otherwise, it's just "can I install neutron today?"

[emersion]

We should switch to dep to pin to dependencies commits.

[emersion]

Fixed by #50.