Update Utf8JsonWriter for null strings, double/single formatting, and consistency.#3143

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mairaw merged 3 commits intodotnet:masterfrom

ahsonkhan:UpdateUtf8JsonWriterDocs

Sep 10, 2019

Commits on Sep 9, 2019

Update Utf8JsonWriter for null strings, double/single formatting, and
ahsonkhan
committed
Fix the IBufferWriter<byte> format since using back-ticks didn't work.
ahsonkhan
committed

Commits on Sep 10, 2019

Address PR feedback.
ahsonkhan
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