Application-properties

- [Issue 195](https://github.com/jackdewinter/application_properties/issues/195)
- Added YAML support for loading properties
- Fixed issue with installation not specifying `pyyaml>=6.0` as an installation dependency
- update dependent packages

- [Issue 192](https://github.com/jackdewinter/application_properties/issues/192)
- moved useful utility functions from PyMarkdown project into application_properties
project
- [Issue 156](https://github.com/jackdewinter/application_properties/issues/156)
- brought into alignment with other projects, for ease of maintenance
- split up Pipfile dependencies into dev-packages and packages
- updating dependencies - 2023Jul15
- updating dependencies - 2023Jul02