Fix NoSuchMethodError due to internal API breakage in sbt >= 1.4

Using runtime reflection, we can avoid having the concrete prototype
of the `defaultScreen` and `withScreenLogger` methods encoded in byte
code.

src/main/scala/sbthyperlink/HyperlinkPlugin.scala

@@ -6,7 +6,7 @@ import sbt.{ Def, _ }
 import sbt.Keys._
 import sbt.plugins.CorePlugin
 import sbt.internal._
-import sbt.internal.util.MainAppender._
+import sbt.internal.util.MainAppender
 import sbt.internal.util.ConsoleAppender
 
 import scala.util.matching.Regex
@@ -84,10 +84,30 @@ object HyperlinkPlugin extends AutoPlugin {
     hyperlinkRegex := Default.regex(baseDirectory.value),
     hyperlinkAction := FileAction,
     logManager := {
-      LogManager.withScreenLogger {
+      // we use internal sbt APIs, which are incompatible between < 1.4 and >= 1.4
+      // see https://github.com/sbt/sbt/issues/5931 and https://github.com/sbt/sbt/pull/5731
+      // work-around using reflection
+      import scala.reflect.runtime.{ universe => ru }
+
+      val mirror = ru.runtimeMirror(getClass.getClassLoader)
+      val mainAppenderType = mirror.typeOf[MainAppender.type]
+      val mainAppenderModuleSymbol = mainAppenderType.termSymbol.asModule
+      val mainAppender = mirror.reflect(mirror.reflectModule(mainAppenderModuleSymbol).instance)
+      val defaultScreenMethodSymbol =
+        mainAppenderType.decl(ru.TermName("defaultScreen")).asTerm.alternatives.collectFirst {
+          case m if m.asMethod.paramLists.foldLeft(0)(_ + _.size) == 1 => m.asMethod
+        }
+      val defaultScreen = mainAppender.reflectMethod(defaultScreenMethodSymbol.get)
+
+      val logManagerType = mirror.typeOf[LogManager.type]
+      val logManagerModuleSymbol = logManagerType.termSymbol.asModule
+      val logManager = mirror.reflect(mirror.reflectModule(logManagerModuleSymbol).instance)
+      val withScreenLoggerMethodSymbol = logManagerType.decl(ru.TermName("withScreenLogger")).asMethod
+      val withScreenLogger = logManager.reflectMethod(withScreenLoggerMethodSymbol)
+
+      withScreenLogger({
         (_: ScopedKey[_], state: State) ⇒
           val extracted = Project.extract(state)
-          val basedir = extracted.get(baseDirectory)
           val action: HyperlinkAction = extracted.get(hyperlinkAction)
           val regex: Regex = extracted.get(hyperlinkRegex)
 
@@ -100,7 +120,7 @@ object HyperlinkPlugin extends AutoPlugin {
 
             override def print(s: String): Unit = super.print(filter(s))
           }))
-      }
+      }).asInstanceOf[LogManager]
     }
   )
 }