This is the third iteration of the 2.0.0 release candidate

New changes:
Allow summary to be disabled.
Correction of HTML/XML validation.
Add more CSS options.
Correct paragraph problem for ox-hugo users.

Previous changes:
Truncation of long syndicate names
Fix iOS/Webkit CSS problems
Add autoloading for functions
Polish planet CSS
CSS hover stylization
Post pinning
Post filtering
Better error messages
Strictness on RFC 2822 dates

2.0.0 release is scheduled to coincide with EmacsConf2020