Improve fetch_bytes, cloud function

• make improvements to fetch_bytes.py, with the aim of switching to abstract binaries stored on GCP
• make improvements to cloud function. Remove unnecessary async code.

Maintenance

• simplifications
• bump some dependencies
• update README.md and wording of web content
• switch from settings file to environment variables
• update csvdata.py

Ongoing maintenance

v0.4.2

Update README.md

Rate limiting

• Rate limit requests
• Bump some dependencies
• Minor code improvements

URLs in the results list

• add URLs to the results list
• remove inline JS and CSS in order to implement a somewhat strict CSP
• disable parts of the spaCy pipeline for greater speed and efficiency
• improve display on mobile
• bump urllib3 version
• improve some variable names
• fix some minor bugs

Simplifying async and language detection

• simplify language detection by switching to langdetect
• simplify async by removing trio
• remove some dependencies that are now unused

Add language detection

• throw an error for abstracts not in English
• recursively handle certain errors
• log more descriptive errors, with status codes

Improvements in security and clarity

• better error handling
• security improvements (validation, headers)
• make cloud_work() function more clear

Improve accessibility

• accessibility improvements
• update README.md
• bump jquery version
• update fetch scripts
• wording, link to bio

Incorporate beta tester suggestions

• add a legend to the results list
• make the "Find out more" div hideable
• remove the hash from the url on jump
• add hyperlinks to the results
• wording, descriptions