bug: upon running git reset --soft HEAD~1, there is no way to re-commit with the previously-used plan

[rorybyrne]

The plan is deleted after the initial Commit abandoned., so when you Unstaged changes after reset: M git_plan/cli.py M git_plan/cli/commands/edit.py M git_plan/cli/commands/init.py M git_plan/conf.py M git_plan/exceptions.py M git_plan/model/commit.py M git_plan/model/project.py M git_plan/service/plan.py M git_plan/service/project.py M git_plan/util/git.py M tests/service/test_plan_service.py D tests/utils.py M tox.ini it cannot be used again.