Pipestat

Fixed
- for output schema, make samples an array type and nest under items [204](https://github.com/pepkit/pipestat/issues/204)
- pipeline_name not setting correctly [207](https://github.com/pepkit/pipestat/issues/207)
- bug with objects populating html report

Fixed
- add obtaining pephub_path from config file, [202](https://github.com/pepkit/pipestat/issues/202)

Fixed
- add pipestat summarize and link for pephub backend

Fixed
- allow for bool or boolean in schema [189](https://github.com/pepkit/pipestat/issues/189)
- fix pipestat summarize bugs re: inaccurate paths [190](https://github.com/pepkit/pipestat/issues/190)
- add support for sqlite dbbackend [192](https://github.com/pepkit/pipestat/issues/192)

Added
- pephub backend [125](https://github.com/pepkit/pipestat/issues/125)

Fixed
- fixed regression with summarizing or creating a table via aggregate_results.yaml and "{record_identifier}" in the results file path
- fix creating object summary when object is an array/list

Changed
- User can override pipeline name via parameter or config file, otherwise look at output_schema, then fall back on default as last resort.
- Allow pipestat to proceed without creating a results file backend IF using "{record_identifier}" in the file path, helps address [Looper 471](https://github.com/pepkit/looper/issues/471)
- Reduce overall verbosity when creating backends