v0.0.8

Added

• Plugins take k9s's inputs and pipes. Inputs open a form before the
  plugin runs (string, number, bool and dropdown fields, required ones
  enforced), and each value reaches the command as $INPUT_<NAME> in its
  args and environment; a plugin with inputs confirms by default. Pipes run
  the command's output through further commands, as a pipeline dockmaster
  builds itself, so no shell parses a value. A pipe of one word, background
  with pipes, and inputs that k9s would accept but run differently are
  refused when plugins.yaml loads. (#18)
• :<view> @context, k9s's: switch to a docker context and open a view in
  one command, with an optional filter — :containers @prod /web. (#18)

Full Changelog: v0.0.7...v0.0.8