Separate inherited members in docs

Helps clean up the docs pages where we inherit from chunky classes like LinearLayout.
With the latest version of Dokka, we cannot hide these inherited members entirely, we can only separate them.

.gitignore

@@ -14,3 +14,6 @@
 .cxx
 local.properties
 SecretRingKey.gpg
+
+# Dokka-generated reference documentation
+reference-docs/

build.gradle

@@ -21,6 +21,14 @@ subprojects {
     if (name != "forage-android") return
 
     apply plugin: 'org.jetbrains.dokka'
+
+    tasks.named("dokkaHtml", org.jetbrains.dokka.gradle.DokkaTask.class) {
+        outputDirectory.set(file("${rootDir}/reference-docs"))
+        pluginsMapConfiguration.set(
+            ["org.jetbrains.dokka.base.DokkaBase": """{ "separateInheritedMembers": true}"""]
+        )        // set separateInheritedMembers = true?
+
+    }
 }
 
 spotless {