* improve `getClasses` in the schema module.
* Adding some classes methods:
* putClass
* patchClass
* deleteClass
* adding shortcuts for
* enabling a schema for union profile : `enableSchemaForRealTime`
* extend a FieldGroup / Mixin to multiple class support (ExperienceEvent/Record/Profile) : `extendFieldGroup`
* adding several methods for profile and identity enablement of datasets:
* `enableDatasetProfile`
* `enableDatasetIdentity`
* `disableDatasetProfile`
* `disableDatasetIdentity`
* `createUnionProfileDataset`
* adding `createExportJob` fin the `customerprofile` module
* adding `getExportJobs`,`getExportJob` and `deleteExportJob`\
Patch:
* improving `schema` internal module work
* adding new option for `getFieldGroup` method
* fix issue with `getDataType` method
* fixing typo in documentation
* Improving descriptor methods with primary support
* fixing getDescriptors loop
* adding deprecated option for schema, fieldGroup and class
* fixing `SyncValidation` parameter in data ingestion.
* adding option to get raw request response object
* Fixing sandbox attribute update when using `updateSandbox` method
* Fix `getAuditEvent` pagination
* Improving `copyFieldGroup` method
* Fixing `extendFieldGroup`
* supporting parquet file download from data access API
* supporting replace operation when creating batch.