Log Message:
print/foliate: Updates to 2.3.0

Changes since 2.2.1:

OPDS catalogs:

  * Catalogs are now opened in the main library window (#403)
  * View current location
  * Go to catalog start page
  * Reload catalog
  * Add current feed to catalogs
  * HTTP authentication support (#421)

Other changes:

  * Fixed unique identifier extraction for FictionBook (.fb2, .fb2.zip)
    files (#462)
  * Fixed newlines being ignored when copying text (#463)
  * "Turn page on tap" is now disabled in non-paginated layouts (#464)
  * Opening a book from the library view now closes the library window (#446)
  * Language and publication dates in metadata are now parsed and formatted
  * Export annotations from the library view

Technical changes:

  * New optional dependency iso-codes (>= 3.67), which provides display
    names for languages and regions. It is highly recommended to install
    this dependency.
  * Flag emojis are now displayed for books whose language property contains
    a country/region code. For the best experience, an emoji font should be
    installed.