Azure/azure-sdk-for-js @azure/storage-blob

2019.12 12.0.1

Updated to use OpenTelemetry 0.2 via @azure/core-tracing
Bug Fix - Convert empty prefixes ("") to undefined when passed as options to the listContainers, listBlobsFlat, and listBlobsByHierarchy methods to avoid sending an invalid request to the service. Fixes bug 5817.
Added a warning to the documentation of downloadToBuffer that explains the limitations of Node.js Buffer sizes to around 2GB on 64-bit architectures and 1GB on 32-bit architectures.
Documented the behavior of getProperties methods with respect to metadata keys and their casing inconsistency when compared to the metadata keys returned through corresponding "list" methods with the includeMetadata option.