## 1.2.0

* Added `Pathname#existence`.
* Added `Pathname#chdir`.
* Fixed `Object#write_to_yaml` to make parent directories as necessary.

## 1.1.0

* Added `Pathname#copy` and `Pathname#copy_into`.
* Added `Pathname#rename_basename` and `Pathname#rename_extname`.
* Added `File.common_path` and `Pathname#common_path`.
* Added `Pathname::NULL`.
* Added JSON-related and YAML-related APIs.
* Fixed `File.edit_text` and `File.edit_lines` to properly truncate.

## 1.0.0

* Initial release