Setup Carton environment
Add a simple scenario
Add new scenario: Pop to help buffer
Add a scenario for history management
Add three scenarios for history management
Fix env.el config

Previously, e2wm:stop-management was not run every time.
Add a test (and related ones) for #46

When the PR #46 applied, this test succeeds.
Add a failing scenario: killing " *e2wm:bllank*" should be OK
Organize Makefile
New scenario: completion window should not move focus
More predicates for the previous test
New scenario: Toggle maximize
Merge pull request #47 from tkf/ecukes

Test using Ecukes