0.3.0

Added

• A second downloadable voice: English (Piper LJSpeech, en_US, medium, dataset public domain)
  next to the German Thorsten. A new setting Voice for export switches between them; it also
  applies to reading aloud with the downloaded voice.
• On first start the voice follows Obsidian's display language (English UI → English voice). A
  choice you have made is never overwritten.

Changed

• Worker and ONNX runtime are now shared between voices: a second voice downloads only its
  model (≈ 60 MB instead of ≈ 75 MB), the voice list shows what each one still costs, and
  Remove keeps the shared runtime as long as another voice needs it.
• The synthesis worker carries both eSpeak-NG dictionaries (English and German), ≈ 2.8 MB instead
  of ≈ 2.2 MB; only the one the selected voice needs is loaded at runtime.