KOReader 2023.04 "Solar Panel"

![koreader-2023-04-fs8](https://user-images.githubusercontent.com/202757/234975122-d7739c71-74aa-4cb0-a086-72a4bba70f52.png)

It's been another busy month squashing many bugs. Our Mac users will be happy to hear that I told macOS we've supported HiDPI since long before anyone came up with such terminology (koreader#10341), and that the program can now natively build on M1 devices (koreader#10291).

Solar panel credit: <https://openclipart.org/detail/294030/solar-energy> by gnokii

We'd like to thank all contributors for their efforts. Some highlights since the previous release include:

* Readerzooming: fix use of default settings (koreader#10205) @hius07
* ButtonDialog/ButtonDialogTitle: consistent 'width' handling (koreader#10230) @poire-z
* MovableContainer: add support for anchoring initial position (koreader#10230) @poire-z
* Book map, Page browser: add top left menu (koreader#10230) @poire-z
* Book style tweak: add button with CSS suggestions (koreader#10230) @poire-z
* crengine: fix parsing of multibytes encodings (koreader#10230) @poire-z
* readerstyletweak: update profiles on unregistering in dispatcher (koreader#10247) @hius07
* Filesearcher: add search in book metadata (koreader#10198) @hius07
* Fix: Updated legacy directory, which crashed the program (koreader#10260) @Mochitto
* ReaderLink: allow a forward location stack (koreader#10228) @yparitcher
* BookInfo: add page information (koreader#10255) @hius07
* Center pdf manual zoom mode (koreader#10246) @nairyosangha
* File browser: add Folder Menu (koreader#10275) @hius07
* Calendar view: add options to change start time of days (koreader#10254) @weijiuqiao
* filechooser: fix crash on "unreadable content" (koreader#10283) @hius07
* Sync book statistics: add to dispatcher (koreader#10285) @ptrm
* [plugin] Exporter: use util.getSafeFilename() to remove illegal characters from output filename (koreader#10282) @Mochitto
* readerbookmark: fix writing pdf annotation (koreader#10287) @hius07
* Folder Menu: sign for Home folder (koreader#10288) @hius07
* ListMenu: show mark for books with highlights (koreader#10276) @hius07
* Calendar view's day view: thicker separator at 00:00 (koreader#10289) @poire-z
* PageBrowser: tweak scrolling behaviour at book start/end (koreader#10289) @poire-z
* Make `kodev check` feature complete (koreader#8682) @yparitcher
* macOS: support for M1 building (koreader#10291) @ptrm
* Reader: do not apply font size and spacing out of range (koreader#10295, koreader#10307) @hius07
* File browser: show Folder Menu on long-press on Home icon (koreader#10298) @hius07
* SSH.koplugin: fix cant stop SSH server bug when pid file's stale (koreader#10300) @weijiuqiao
* PM: Optimize task queue handling around standby (koreader#10203) @zwim
* statistic.koplugin: fix today's timeline showing next day when within custom offset (koreader#10299) @weijiuqiao
* ReaderThumbnails: update cached page thumbnail on bookmark note change (koreader#10303) @hius07
* SDL: add multitouch support (koreader#10334) @Frenzie
* SDL: add HiDPI support (koreader#10341) @Frenzie
* BookInfo: fix crash on show cover (koreader#10315) @hius07
* Deal with table.pack corner-cases properly (koreader#10350) @NiLuJe
* Android: add Tagus Gea support (<koreader/android-luajit-launcher#412>) @Alfedi

[Full changelog](koreader/koreader@v2023.03...v2023.04) — [closed milestone issues](https://github.com/koreader/koreader/milestone/63?closed=1)

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Installation instructions: [Android](https://github.com/koreader/koreader/wiki/Installation-on-Android-devices) • [Cervantes](https://github.com/koreader/koreader/wiki/Installation-on-BQ-devices) • [ChromeOS](https://github.com/koreader/koreader/wiki/Installation-on-Chromebook-devices) • [Kindle](https://github.com/koreader/koreader/wiki/Installation-on-Kindle-devices) • [Kobo](https://github.com/koreader/koreader/wiki/Installation-on-Kobo-devices) • [PocketBook](https://github.com/koreader/koreader/wiki/Installation-on-PocketBook-devices) • [ReMarkable](https://github.com/koreader/koreader/wiki/Installation-on-ReMarkable) • [Desktop Linux](https://github.com/koreader/koreader/wiki/Installation-on-desktop-linux) • [MacOS](https://github.com/koreader/koreader/wiki/Installation-on-MacOS)

c.f., koreader/koreader-base#1603 for more
details.

Re: koreader#9624