Ipr

Improvements:
- GERO-241 - update content.spec.json - allow nulls for optional copynumber fields cna, copyChange and log2Cna

New Features
- Add new external source and external statement id fields to IPR upload

BugFixes
- Do not allow empty string as valid comparator
- Treat pandas.NA as null/none
- GERO-257: Remove hgvs from dropped columns

Improvements
- GERO-241: Treat empty string as NA for number columns
- GERO-241: Add null value options to the content JSON specification
- Additional JSON validation tests

Breaking Changes
- Use JSON for all report inputs
- Move documentation to main PORI repo

BugFixes
- 33 Add template to JSON schema

Improvements
- Add tests for command line interface

Bugfix:
- GERO-196 - bugfix - 'prognostic' events must match cancer, not 'diagnostic' - typo

Improvements
- Update documentation to add examples to kbCategory input columns
- use statementIds field instead of notes in putative therapeutic options

Improvements:
- GERO-161 exclude statements that failed review from matching.
- Documentation updates comparators and roles.
- Improved error messages.