Log Message:
Update to vimb-2.2.

Changes:
- added page marks via m{a-z} and navigating to them '{a-z}
- evaluate `no_proxy` environment variable
- fixed regression in prev-/nextpattern evaluation
- allow to run ex-commands on startup via `--cmd` option (maybe this will be
  removed in a later release if there is a way to start a names vimb session)
- better logic to check if an element is hintable
- fixed none shown header manipulations in webinspector via `:set header=...`