Public preview: OCR supports 164 languages in the Cognitive Services Computer Vision

Computer Vision's [OCR (Read) API](https://docs.microsoft.com/en-us/azure/cognitive-services/computer-vision/overview-ocr) expands [supported languages](https://docs.microsoft.com/en-us/azure/cognitive-services/computer-vision/language-support#handwritten-languages) to 164 with its latest preview: * OCR support for print text expands to 42 new languages including Arabic, Hindi and other languages using Arabic and Devanagari scripts. * OCR support for handwritten text expands to Japanese and Korean in addition to English, Chinese Simplified, French, German, Italian, Portuguese, and Spanish. * Enhancements include improved support for extracting handwritten dates, amounts, names, and single character boxes. * General performance and AI quality improvements. See the [OCR how-to guide](https://docs.microsoft.com/en-us/azure/cognitive-services/computer-vision/vision-api-how-to-topics/call-read-api#specify-the-ocr-model) to learn how to use the new preview features. * Features