v3.0.0

Signed and notarized. Recommended: download the .dmg, open
it, and drag Readr into Applications. The .zip is the same app
for scripted installs.

What's Changed

• Send the two fields Apple refused the submission for by @Anusree-J in #74
• Declare content rights on the app, not the version by @Anusree-J in #75
• Answer age rating and pricing through the API by @Anusree-J in #76
• Read the book aloud, starting from the page you're on by @Anusree-J in #77
• Ship 3.0.0 — narration, and three rounds of what the hardware found by @Anusree-J in #78

Full Changelog: v2.15.1...v3.0.0