v1.5

• Firefox support added

v1.4

• remove the "?useskin=vector" parameter from the address bar after the page loads (#3 by torma616)
• redesign popup window to a more modern dark design
• add auto reload feature to automatically reload the page after enabling or disabling the legacy vector skin

v1.3

• Fix popup font size for Windows

v1.2

• A popup was added to activate or deactivate the vector skin.

v1.1

• Apply the vector skin to the remaining international Wikimedia pages:
  • Wiktionary
  • Wikiquote
  • Wikibooks
  • Wikisource
  • Wikispecies
  • Wikinews
  • Wikiversity
  • Wikivoyage
  • Wikimedia Commons
  • Wikidata
  • MediaWiki
  • Meta-Wiki
  • Wikimedia Incubator
  • Wikimedia Cloud Services

v1.0

• Append "?useskin=vector" to the end of each HTTP request.