Change log for STIX

Date	Changes
2024-09-25	Enhancement: - Mapped "x_ctix_confidence_score" to "threat_detail.confidence_score".
2024-09-25	Enhancement: - Mapped "x_ctix_confidence_score" to "threat_detail.confidence_score".
2024-09-20	Enhancement: - Added drop statement to drop unsupported logs. - Mapped "modified" to "timestamp". - Mapped "valid_from" to "entity_event.metadata.interval.start_time". - Added support for logs with the "pattern" value "hostname:value". - If the "entity_type" field is not equal to "File," then map the "valid_until" field to the value of "entity_event.metadata.interval.end_time."
2024-09-19	Enhancement: - Added new Grok patterns to parse the field "pattern". - Mapped "valid_until" to "metadata.interval.end_time".
2024-09-18	Enhancement: - Added support for logs with the "pattern" value "ipv4:addr". - Added support for logs with the "main_observable_type" value "Hostname". - Mapped "confidence" to "threat_detail.confidence_score". - When "main_observable_type" is "StixFile", then mapped "name" to "entity.entity.file.full_path".
2024-03-06	Enhancement: - Added support for logs with the "type" value "indicator".
2024-02-07	Enhancement: - Added support for entity field mappings for new set of ingested logs. - Mapped "description" to "threat_detail.description". - Mapped "external_references.0.source_name" to "entity_event.entity.hostname". - Mapped fields present in nested JSON field "extensions.extension-definition" to "threat_detail.detection_fields".
2023-11-08	Enhancement: - Added support for entity field mappings for new set of ingested logs. - Mapped "entity_type" to "IP_ADDRESS" and "entity_event.entity.ip" to "ip" for "pattern" = "ipv4-addr". - Mapped "entity_type" to "USER" and "entity_event.entity.user.email_addresses" to "mail" for "pattern" = "email-addr". - Mapped "entity_type" to "FILE" and "entity_event.entity.file.sha256" to "sha256val","entity_event.entity.file.md5" to "MD5_val" and "entity_event.entity.file.sha1" to "sha1_val" for "pattern" = "file:hashes". - Mapped "entity_type" to "DOMAIN_NAME" and "entity_event.entity.hostname" to "dom" for "pattern" = "domain-name". - Mapped "entity_type" to "URL" and "entity_event.entity.url" to "url_val" for "pattern" = "url:value".
2023-03-24	Enhancement: Added support for entity field mappings.
2022-12-12	Bug Fix - Mapped timestamp to "metadata.event_timestamp". - Added Grok patterns to identify the type of log. - Added type specific blocks like 'md5', 'sha1', 'sha256', 'domain-name', 'mal_file_name' etc.
2022-12-03	Bug Fix - Parsed unparsed logs: - Added Grok patterns to identify the type of log. - Added type specific blocks like 'mal_md5', 'mal_url' etc. - Parsed 'SHA-512' as 'security_result.detection_fields' due to large size.
2022-11-27	Newly created parser.