* Replace RxJava in ChapterLoader * Don't swallow CancellationException * Simplify loadChapter behavior * Add error handling to loadAdjacent (cherry picked from commit 62480f090b3007487b7125c6a2cd63a6103486cc) # Conflicts: # app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderViewModel.kt # app/src/main/java/eu/kanade/tachiyomi/ui/reader/loader/ChapterLoader.kt