1. Removed `bc` requirement and use `awk` instead, for systems that do not have `bc` for integer maths
1. Revamp how arrays are built and sanitized
1. Automatically detect and test against self-hosted DNS (checks for port 53 use and adds 127.0.0.1 to the nameserver list)
1. Auto-number resolv.conf nameservers to distinguish listings
1. Revamp internal DNS Provider and Domains 2 Test lists, compensating for bad entries and adding the ability to add comments lines
1. Modify logging to be as compact as reasonably possible. Providers column is now dynamically sized
1. Display corresponding Domains 2 Test list at end so we know which tests were to what

1. Code syntax revisions/compressions
2. Default display optimized for testing 13 domain names for median response times
3. Added more default domains to test
4. Added more default DNS providers to test
5. Automatically display output sorted by fastest median response time
6. Automatically save sorted list to file

This documentation is super basic. I need to come back to this and make proper write-ups of what has been changed and how it works. But the example output should make a lot of it obvious once you use the script or if you have experience with the original version.

1. Added column header lines to output log
2. Refined median response time sort to compensate for column header lines
3. Refined syntax to scrape and process BASH_SOURCE[0] instead of $0