Build 410: a new Speak voice picker, steadier reader controls, and smoother swipes

[briarrrn]

Build 410 is on TestFlight now.

Speak has a new voice picker. Tap the waveform button on the Speak bar. Your server's voices come first, and tapping one plays a short sample so you can hear it before you choose. This iPhone's voices sit below as a fallback, for when your server can't be reached. There are a lot of them, so you can touch and hold one to hide it, and bring it back from Hidden Voices.

Swipes finish their turn. With Slide, letting go mid-swipe used to make the page jump. It now slides on to rest, and a quick flick turns the page even when the drag was short. Thanks to @nben for the report and the recording.

Steadier reader controls. Every reader now has a scrubber with "N of M" while the controls are up. In ebooks, the book title and chapter line at the top sit clear of the edge, and the text starts clear of them. On iPhone Duo, the controls sit in the side strip, and the page no longer moves or resizes when they show or hide.

Also in this build:

• Right-to-left and vertical books should turn pages the way they're laid out.
• In comics, Curl could crash the app just after a page turn. That should be gone.
• Book Guide on iPhone: Add Name and the other pickers open as plain sheets, which should stop Add Name closing the app.
• Books made of images open with less work in the background.
• Search's field and the Books and Notes switch float over your results.
• On the Mac, I've moved the library's data out of the shared app folder. I think that's what got the app closed in the background. Tell me if it still happens.

If you use Speak with a server voice, please try turning on Airplane Mode while it's reading. It should carry on in your iPhone voice.

Fixes reported here: #192