Parse Emacs Lisp libraries
Extract documentation from Emacs Lisp code
Parse paragraphs in docstrings
Fix resolving of generic symbol references
Parse inline literals in docstrings
Simplify paragraph building
Return the paragraph from eof transition explicitly
Swap node and manual in info references

Makes info references match the syntax of references in Emacs Lisp
docstrings.
Add info node references to hook docstrings
Parse info node references and emphasis in docstrings
Use auto docstrings for some objects
Remove left-over code
Improve insertion of autodoc nodes
Do not return empty messages
Remove unused variable
Improve grammar
More auto variables
Parse all special referencing expressions in docstrings
Use autodoc for flycheck-checkers and flycheck-disabled-checkers
Parse meta variables in docstrings

A meta-variable is a sequence of four or more uppercase letters
currently, to avoid confusion with acronyms such as GNU.  We should
probably use more clever logic in future.