[Text Analytics] Merge feature branch for v5.1.0 to main (Azure#16121)

It consists of the following already-reviewed PRs:
Azure#16114
Azure#16095
Azure#15995
Azure#15684
Azure#15649
Azure#15598
Azure#15554

Author: deyaaeldeen

sdk/textanalytics/ai-text-analytics/CHANGELOG.md

@@ -1,14 +1,22 @@
 # Release History
 
-## 5.1.0-beta.7 (Unreleased)
+## 5.1.0 (Unreleased)
+
+### New Features
+
+- We are now targeting the service's v3.1 API as the default instead of v3.1-preview.5.
 
 ### Breaking Changes
 
 - `PiiEntityDomainType` was renamed to `PiiEntityDomain`.
+- `domain` property of `RecognizePiiEntitiesAction` was renamed to `domainFilter`.
+- `categoriesFilter` was added to `RecognizePiiEntitiesAction`.
+- `beginAnalyzeActions` is now limited to accept up to one action only per type.
 
 ## 5.1.0-beta.6 (2021-05-18)
 
 ### New Features
+
 - With the dropping of support for Node.js versions that are no longer in LTS, the dependency on `@types/node` has been updated to version 12. Read our [support policy](https://github.com/Azure/azure-sdk-for-js/blob/main/SUPPORT.md) for more details.
 - We are now targeting the service's v3.1-preview.5 API as the default instead of v3.1-preview.4.
 - `beginAnalyzeActions` adds support for analyze sentiment actions.

sdk/textanalytics/ai-text-analytics/README.md

@@ -2,7 +2,7 @@
 
 [Azure TextAnalytics](https://azure.microsoft.com/services/cognitive-services/text-analytics/) is a cloud-based service that provides advanced natural language processing over raw text, and includes six main functions:
 
-**Note:** This SDK targets Azure Text Analytics service API version 3.1.0-preview.5.
+**Note:** This SDK targets Azure Text Analytics service API version 3.1.0.
 
 - Language Detection
 - Sentiment Analysis
@@ -254,10 +254,7 @@ There is a separate endpoint and operation for recognizing Personally Identifiab
 
 ```javascript
 const { TextAnalyticsClient, AzureKeyCredential } = require("@azure/ai-text-analytics");
-const client = new TextAnalyticsClient(
-  "<endpoint>",
-  new AzureKeyCredential("<API key>")
-);
+const client = new TextAnalyticsClient("<endpoint>", new AzureKeyCredential("<API key>"));
 const documents = [
   "The employee's SSN is 555-55-5555.",
   "The employee's phone number is (555) 555-5555."
@@ -501,11 +498,6 @@ async function main() {
 main();
 ```
 
-## Known Issues
-
-- `beginAnalyzeHealthcareEntities` is still in gated preview and can not be used with AAD credentials. For more information, see [the Text Analytics for Health documentation](https://docs.microsoft.com/azure/cognitive-services/text-analytics/how-tos/text-analytics-for-health?tabs=ner#request-access-to-the-public-preview).
-- At time of this SDK release, the `modelVersion` option to `beginAnalyzeHealthcareEntities` is ignored by the service. The service always processes the operation using the "latest" model.
-
 ## Troubleshooting
 
 ### Logging

sdk/textanalytics/ai-text-analytics/package.json

@@ -3,7 +3,7 @@
   "sdk-type": "client",
   "author": "Microsoft Corporation",
   "description": "An isomorphic client library for the Azure Text Analytics service.",
-  "version": "5.1.0-beta.7",
+  "version": "5.1.0",
   "keywords": [
     "node",
     "azure",
@@ -104,6 +104,7 @@
     "@azure/dev-tool": "^1.0.0",
     "@azure/eslint-plugin-azure-sdk": "^3.0.0",
     "@azure/identity": "2.0.0-beta.3",
+    "@azure/test-utils": "^1.0.0",
     "@azure/test-utils-recorder": "^1.0.0",
     "@microsoft/api-extractor": "7.7.11",
     "@types/chai": "^4.1.6",