🔥 aruba process optimization

This was fun and everything, but the patch makes it tricky to upgrade Aruba, so
it should go for now.

features/support/aruba_command.rb

@@ -1,81 +0,0 @@
-require 'open3'
-require 'shellwords'
-
-module Aruba
-  remove_const :Command
-  class Command
-    attr_reader :commandline, :stdout, :stderr
-    attr_reader :exit_timeout, :io_wait_timeout, :startup_wait_time, :environment, :stop_signal, :exit_status
-
-    def initialize(cmd, mode:, exit_timeout:, io_wait_timeout:,
-                   working_directory:, environment:, main_class:, stop_signal:,
-                   startup_wait_time:, event_bus:)
-      @commandline = cmd
-      @working_directory = working_directory
-      @event_bus = event_bus
-      @exit_timeout = exit_timeout
-      @io_wait_timeout = io_wait_timeout
-      @startup_wait_time = startup_wait_time
-      @environment = environment
-      @stop_signal = stop_signal
-
-      @stopped = false
-      @exit_status = nil
-      @stdout = nil
-      @stderr = nil
-    end
-
-    def inspect
-      %(#<Command "#{@commandline}" exited:#{@exit_status}>)
-    end
-
-    def output
-      stdout + stderr
-    end
-
-    def start
-      @event_bus.notify Events::CommandStarted.new(self)
-      cmd = Shellwords.split @commandline
-      @stdin_io, @stdout_io, @stderr_io, @thread = Open3.popen3(@environment, *cmd, chdir: @working_directory)
-    end
-
-    def write(input)
-      @stdin_io.write input
-      @stdin_io.flush
-    end
-
-    def close_io(io)
-      case io
-      when :stdin then @stdin_io.close
-      else
-        raise ArgumentError, io.to_s
-      end
-    end
-
-    def stop
-      return if @exit_status
-      @event_bus.notify Events::CommandStopped.new(self)
-      terminate
-    end
-
-    def terminate
-      return if @exit_status
-
-      close_io(:stdin)
-      @stdout = @stdout_io.read
-      @stderr = @stderr_io.read
-
-      status = @thread.value
-      @exit_status = status.exitstatus
-      @thread = nil
-    end
-
-    def interactive?
-      true
-    end
-
-    def timed_out?
-      false
-    end
-  end
-end