Rewrite tag searching to use SQL

Fix EHentai/ExHentai
Fix hitomi.la
Fix hitomi.la crashing application
Rewrite hitomi.la search engine to be faster, use less CPU and require no preloading
Fix nhentai
Add additional filters to nhentai
Fix PervEden
Introduce delegated sources
Rewrite HentaiCafe to be a delegated source
Introduce ability to save/load search presets
Temporarily disable misbehaving native Tachiyomi migrations
Fix tap-to-search-tag breaking on aliased tags
Add debug menu
Add experimental automatic captcha solver
Add app name to wakelock names
Add ability to interrupt metadata migrator
Fix incognito open-in-browser being zoomed in immediately when it's opened

app/src/main/java/exh/debug/SettingsDebugController.kt

@@ -0,0 +1,33 @@
+package exh.debug
+
+import android.support.v7.preference.PreferenceScreen
+import android.util.Log
+import com.afollestad.materialdialogs.MaterialDialog
+import eu.kanade.tachiyomi.ui.setting.SettingsController
+import eu.kanade.tachiyomi.ui.setting.onClick
+import eu.kanade.tachiyomi.ui.setting.preference
+import kotlin.reflect.full.declaredFunctions
+
+class SettingsDebugController : SettingsController() {
+    override fun setupPreferenceScreen(screen: PreferenceScreen) = with(screen) {
+        title = "DEBUG MENU"
+
+        DebugFunctions::class.declaredFunctions.forEach {
+            preference {
+                title = it.name.replace(Regex("(.)(\\p{Upper})"), "$1 $2").toLowerCase().capitalize()
+                isPersistent = false
+
+                onClick {
+                    try {
+                        val result = it.call(DebugFunctions)
+                        MaterialDialog.Builder(context)
+                                .content("Function returned result:\n\n$result")
+                    } catch(t: Throwable) {
+                        MaterialDialog.Builder(context)
+                                .content("Function threw exception:\n\n${Log.getStackTraceString(t)}")
+                    }.show()
+                }
+            }
+        }
+    }
+}