* Support "read more" for Activity-Summary
* add support for excerpt
* use the same function also for the shortcode
* add mentions, hashtags and links support to `the_excerpt`
* do not make unnecessary extra db calls
* fall back to default if options is empty
* remove unused hook
* some fixes
and improvements based on the feedback of @MatzeKitt
* add phpdoc
* also extract hashtags from excerpt
* use filter, so that it is possible to also support mentions
and maybe tags in the future
* Add PHPDoc
* simplify code
* fix test
* replace hashtags, mentions and ulrs in summary
* move faq stuff and auto generate markdown version with grunt
* I would rename it the class to `Link` because it's about linking not about URLs
* fix auto generated readme
* let use not converted links in extra fields our link generation
* consistency
* find new function name, because it is not purely about links
* make `rel` directly filterable to be more flexible in the future
* remove some whitespaces
* it is not needed to check for a link inside a link
* not convert extra field links with additional text
* not convert extra field links with additional text
* simplified code
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Co-authored-by: Matthias Pfefferle <pfefferle@users.noreply.github.com>
Imitate User Extra Fields, and consolidate into an `ExtraFields` class
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Co-authored-by: Matthias Pfefferle <pfefferle@users.noreply.github.com>
