v11- Astolfo, Maika, Rias, & Rei

4 New Themes

From the Fate series:

• Astolfo (Dark)

From the Highschool DxD series:

• Rias: Onyx (a darker theme)
  • 2 Stickers:
    • A Mild One
    • A Cultured One

From the Blend S series:

• Sakuranomiya Maika (Dark)

From the Neon Genesis Evangelion series:

• Ayanami Rei (Dark)

Other stuff

• Added GitLens theming integration.
• Updated activation events to enhance user startup experience.