* Fix git config reader can't read values with spaces
* Add bug-id-revmap config option for the reverse map, and use this
in the importer
* Add NewImportWarning for things that aren't exactly errors.
Use this for unhandled changelog events.
* Add NewExportWarning for things that aren't exactly errors.
Use this for un-exportable status changes.
* Strip newlines from titles on import
* return error, don't panic
* skipping status export is an error
* use switch in config.go
* move PromptPassword to input
* move client construction into getIdentityClient
* use non-pointer context throughout client since it is an interface
* remove some TODOs
* don't emit multiple nothing-events, just one per bug only if nothing
happened.
* rename EditBody to EditCreateComment
* add configuration notes about additional values
* store bug id map in a dictionary in the config
* some fixes from testing
