New reader (#1550)

* Delete old reader

* Add utility methods

* Update dependencies

* Add new reader

* Update tracking services. Extract transition strings into resources

* Restore delete read chapters

* Documentation and some minor changes

* Remove content providers for compressed files, they are not needed anymore

* Update subsampling. New changes allow to parse magic numbers and decode tiles with a single stream. Drop support for custom image decoders. Other minor fixes

app/src/main/java/eu/kanade/tachiyomi/source/model/Page.kt

@@ -2,21 +2,18 @@ package eu.kanade.tachiyomi.source.model
 
 import android.net.Uri
 import eu.kanade.tachiyomi.network.ProgressListener
-import eu.kanade.tachiyomi.ui.reader.ReaderChapter
 import rx.subjects.Subject
 
-class Page(
+open class Page(
         val index: Int,
         val url: String = "",
         var imageUrl: String? = null,
-        @Transient var uri: Uri? = null
+        @Transient var uri: Uri? = null // Deprecated but can't be deleted due to extensions
 ) : ProgressListener {
 
     val number: Int
         get() = index + 1
 
-    @Transient lateinit var chapter: ReaderChapter
-
     @Transient @Volatile var status: Int = 0
         set(value) {
             field = value