```ruby

require 'timecost/commit'
require 'timecost/range'
require 'timecost/rangelist'
require 'timecost/cli'

```

Fix errors due to renaming *list to *_list.
user
```ruby

require 'timecost/commit'
require 'timecost/range'
require 'timecost/author_list'
require 'timecost/range_list'
require 'timecost/cli'

```
assistant