Fix English, uniform capitalization, better changelog

[dandv]

• consistent capitalization of "Reader", "Publisher"
• consistent smart single quotes
• sort changelog by date and add year to timestamps
• fix link to ExternalCID
• add READER_ID example

[jridgewell]

/to @bpaduch

[ghost]

Thanks for the updates and corrections. Regarding the capitalization of "Publisher" and "Reader", I believe that to be unnecessary as they aren't proper nouns, nor are we referring to a GUI element or code element (e.g., "Reader ID" would remain capitalized as it refers to a field/code element). I do agree that capitalization should be consistent throughout the doc, so perhaps, undo this capitalization and fix the previous capitalization issues.

[dandv]

Regarding the capitalization of "Publisher" and "Reader", I believe that to be unnecessary as they aren't proper nouns

Agree. I had just adopted the prevalent convention - Reader and Publisher were capitalized in about 75% of the instances. There are words subject to this pattern, such as "The AMP Runtime calls the Authorization endpoint" or "restricted sections based on the Authorization response", "Pingback endpoint and Login Page are optional" etc.

Would it make sense to merge this PR, then do another sweep for all capitalization issues?

[ghost]

Sure, sounds good.