feature/stream-and-websocket-handlers

[ndortega]

• added support for stream and websocket handlers
• Included format_sse_message to help format messages for Server Sent Events (SSE) Related: #117

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 99.36%. Comparing base (4b10542) to head (c714f38).

:exclamation: Current head c714f38 differs from pull request most recent head 0076b7e. Consider uploading reports for the commit 0076b7e to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #177 +/- ## ========================================== + Coverage 99.33% 99.36% +0.03% ========================================== Files 23 24 +1 Lines 1198 1266 +68 ========================================== + Hits 1190 1258 +68 Misses 8 8 ```

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