Trilium-py

Features:
* 356 [custom request handlers](https://github.com/zadam/trilium/wiki/Custom-request-handler)
* [custom CSS themes](https://github.com/zadam/trilium/wiki/Themes#custom-css-themes), added an example theme called *Steel Blue* into [demo document](https://github.com/zadam/trilium/wiki/Document#demo-document).
* refactored consistency checks + more "auto fixers" for possible issues
* 385 URL to create a search

Bug fixes:
* 392 Better icon for iOS' homescreen
* 387 Fixed extra angle brackets in tree in dark themes
* 384 Character code specification in HTML header
* 377 add confirm type change dialog when note not empty
* 376 Alt-Left and Alt-Right Key Bindings for Mac
* 375 Moving sometimes has strange side effects

Mostly small visual fixes:

* text note should change its icon after having new note inserted into, 361
* make search dialog more responsive in narrow sidebar, fixes 367
* font sizes were not created for new documents - fix plus migration from already created documents
* make tree selection more visually consistent
* fix icon in desktop linux build, fixes 372

Fixes mainly consistency check bug introduced in 0.28.X and contains "auto fixer" 366, 355

Highlights:

* configurable font sizes 326
* foundation for proper theming 328
* fixed export with non-ASCII root notes 285, 331
* desktop builds are now in ASAR format which dramatically lowers number of files 271
* Windows and Mac builds are now packaged in ZIP, linux ones in .tar.xz

Smaller fixes, mainly UI:

* Docker image fails to build 274
* Header bar does not fully extend when advanced sample button removed 276
* Cant log in with Mac desktop app - Auth request time is out of sync 277
* Buttons in Options Not Visible 297
* Imported a directory of markdown and items not showing in links 293
* evernote import freezes 288
* Protecting Journal/Today produces error message when leaving protected session 279
* Changing saved search 304
* shortcuts for mac should use cmd instead of ctrl 290
* Cannot paste password from password manager 267
* JSON file not saving the content. 307
* [Bug] Hoisted Note detection 320
* Bug: recent-docs dropdown doesn't disappear when attributes dialog closes 272