Fix summary, update Open AI client

• Fix summary
• Update OpenAI client
• Better error handling for summary

Add from name in Sendgrid

Merge pull request #20 from dabigjoe6/from-name

Add from name in Sendgrid payload

Get new summaries when summary length less than 100 characters

Merge pull request #19 from dabigjoe6/clean-summaries

Get new summaries when summary length less than 100 characters

Refactor

Merge pull request #18 from dabigjoe6/refactor

Refactor

Fix email

Fix missing "|" when readLength or published date is missing
Fix empty email message when past digest is empty but latest digest isn't

Update lambda function to fix duplicate latest article

Remove functionality comparing diffs of recent articles from DB and simply send new articles to DB

Content fix

Add backward compatibility for resources without content but contains only description field

Fix sync process

Fix sync process

Fix issues with Summary

Fix issues with Summary, converted send-feed to a class

Welcome mail on user sign up

Welcome mail on user sign up