v4.4.0

• Added alternative search engines including Bing and DuckDuckGo
  • You can change your preferred search engine using the yvset keyword
  • As described in the README, you can search the selected reference using your preferred search engine using the ctrl modifier key
• Eliminated inefficiency which caused default preferences to be loaded in addition to user preferences even if user preferences already existed
• Added support for Polish (pl)
• Non-numbered queries no longer match numbered books when filtering references
  • e.g. The query c3 now matches Colossians 3 alone and no longer includes 1 Corinthians 3