Changed

• Breaking Change
  Changed the SwiftDoc GitHub Action to require a secret named
  GH_PERSONAL_ACCESS_TOKEN (previously GITHUB_PERSONAL_ACCESS_TOKEN).
  According to the GitHub Help article
  "Creating and storing encrypted secrets":

  Secret names cannot include any spaces or start with the GITHUB_ prefix.
  8837d82 by @mattt.

• Breaking Change
  Changed the SwiftDoc GitHub Action to require a module-name parameter
  and accepts a format parameter.
  b231c07 by @mattt.
• Changed output for CommonMark format to omit Home page
  for output with only a single page.
  #55 by @mattt.
• Changed output for CommonMark format to nest sections in Members component.
  #55 by @mattt.
• Changed output for CommonMark format to remove initializer clauses
  from variable and enumeration case declarations.
  #55 by @mattt.
• Changed CI tests to build and run with a release configuration
  for consistency with the executable built with make install.
  #51 by @mattt.
• Changed use of print statements,
  replacing them with a formal logging infrastructure.
  #52 by @mattt.

Fixed

• Fixed bug in SourceFile.Visitor that caused incorrect results
  when determining the context of symbols parsed from Swift source files.
  #51 by @mattt.
• Fixed SwiftDoc GitHub action to build against latest version of swift-doc.
  5c0e4e0 by @mattt
• Fixed output for CommonMark format to escape GitHub Emoji shortcodes
  #55 by @mattt.
• Fixed output for CommonMark format to remove duplicate headings
  for global symbol pages.
  #55 by @mattt.
• Fixed documentation for SwiftDoc GitHub Action
  to clarify that only a single path can be specified for the input parameter.
  c34ccc1 by @mattt (#19).
• Fixed coverage subcommand description.
  #16 by @rastersize.