v0.8.1: Add RecordTypes Support
Snowfakery includes support for Salesforce RecordTypes.
Snowfakery can output SQL/JSON NULL using YAML blank fields or the YAML literal 'null'
Fields starting with __ are now properly suppressed as per the documentation.
Various performance and reliability improvements:
- parsed dates are now cached
- Jinja values are always coerced to a string where appropriate
- internal attributes were renamed for clarity
- lookups are only generated in CCI mappings if they are actually needed