diff --git a/CHANGELOG.org b/CHANGELOG.org
index 271615b..bb87882 100644
--- a/CHANGELOG.org
+++ b/CHANGELOG.org
@@ -6,6 +6,18 @@ The format is based on [[https://keepachangelog.com/en/1.0.0/][Keep a Changelog]
 [[https://semver.org/spec/v2.0.0.html][Semantic Versioning]].
 
 
+* [0.7.2] - 2019-07-19
+
+** Changed
+
+   - Apply ~scalafmt~ (#108)
+   - Uses Lenses (#113)
+
+** Fixed
+
+   - Creates incorrect MD5 hash for some files (#103)
+   - NullPointerException creating scaladoc (#115)
+
 * [0.7.1] - 2019-07-15
 
 ** Changed
diff --git a/build.sbt b/build.sbt
index c000855..49898a7 100644
--- a/build.sbt
+++ b/build.sbt
@@ -26,9 +26,6 @@ val commonSettings = Seq(
     "-language:postfixOps",
     "-language:higherKinds",
     "-Ypartial-unification"),
-  addCompilerPlugin(
-    "org.scalameta" % "paradise" % "3.0.0-M11" cross CrossVersion.full
-  ),
   test in assembly := {}
 )
 
diff --git a/core/src/main/scala/net/kemitix/thorp/core/Action.scala b/core/src/main/scala/net/kemitix/thorp/core/Action.scala
index 830947e..fa75c66 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/Action.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/Action.scala
@@ -1,6 +1,5 @@
 package net.kemitix.thorp.core
 
-import monocle.macros.Lenses
 import net.kemitix.thorp.domain.{Bucket, LocalFile, MD5Hash, RemoteKey}
 
 sealed trait Action {
@@ -9,21 +8,18 @@ sealed trait Action {
 }
 object Action {
 
-  @Lenses
   final case class DoNothing(
       bucket: Bucket,
       remoteKey: RemoteKey,
       size: Long
   ) extends Action
 
-  @Lenses
   final case class ToUpload(
       bucket: Bucket,
       localFile: LocalFile,
       size: Long
   ) extends Action
 
-  @Lenses
   final case class ToCopy(
       bucket: Bucket,
       sourceKey: RemoteKey,
@@ -32,7 +28,6 @@ object Action {
       size: Long
   ) extends Action
 
-  @Lenses
   final case class ToDelete(
       bucket: Bucket,
       remoteKey: RemoteKey,
diff --git a/core/src/main/scala/net/kemitix/thorp/core/ConfigOption.scala b/core/src/main/scala/net/kemitix/thorp/core/ConfigOption.scala
index 4c2b6fc..c34174b 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/ConfigOption.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/ConfigOption.scala
@@ -2,7 +2,6 @@ package net.kemitix.thorp.core
 
 import java.nio.file.Path
 
-import monocle.macros.Lenses
 import net.kemitix.thorp.domain
 import net.kemitix.thorp.domain.{Config, RemoteKey}
 import net.kemitix.thorp.domain.Config._
@@ -13,13 +12,11 @@ sealed trait ConfigOption {
 
 object ConfigOption {
 
-  @Lenses
   case class Source(path: Path) extends ConfigOption {
     override def update(config: Config): Config =
       sources.modify(_ ++ path)(config)
   }
 
-  @Lenses
   case class Bucket(name: String) extends ConfigOption {
     override def update(config: Config): Config =
       if (config.bucket.name.isEmpty)
@@ -28,7 +25,6 @@ object ConfigOption {
         config
   }
 
-  @Lenses
   case class Prefix(path: String) extends ConfigOption {
     override def update(config: Config): Config =
       if (config.prefix.key.isEmpty)
@@ -37,19 +33,16 @@ object ConfigOption {
         config
   }
 
-  @Lenses
   case class Include(pattern: String) extends ConfigOption {
     override def update(config: Config): Config =
       filters.modify(domain.Filter.Include(pattern) :: _)(config)
   }
 
-  @Lenses
   case class Exclude(pattern: String) extends ConfigOption {
     override def update(config: Config): Config =
       filters.modify(domain.Filter.Exclude(pattern) :: _)(config)
   }
 
-  @Lenses
   case class Debug() extends ConfigOption {
     override def update(config: Config): Config =
       debug.set(true)(config)
diff --git a/core/src/main/scala/net/kemitix/thorp/core/ConfigOptions.scala b/core/src/main/scala/net/kemitix/thorp/core/ConfigOptions.scala
index 2586ede..3b7a523 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/ConfigOptions.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/ConfigOptions.scala
@@ -1,9 +1,9 @@
 package net.kemitix.thorp.core
 
 import cats.Semigroup
-import monocle.macros.Lenses
+import monocle.Lens
+import monocle.macros.GenLens
 
-@Lenses
 case class ConfigOptions(
     options: List[ConfigOption] = List()
 ) extends Semigroup[ConfigOptions] {
@@ -24,3 +24,8 @@ case class ConfigOptions(
     options contains elem
 
 }
+
+object ConfigOptions {
+  val options: Lens[ConfigOptions, List[ConfigOption]] =
+    GenLens[ConfigOptions](_.options)
+}
diff --git a/core/src/main/scala/net/kemitix/thorp/core/Counters.scala b/core/src/main/scala/net/kemitix/thorp/core/Counters.scala
index ccfdb58..553b002 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/Counters.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/Counters.scala
@@ -1,11 +1,18 @@
 package net.kemitix.thorp.core
 
-import monocle.macros.Lenses
+import monocle.Lens
+import monocle.macros.GenLens
 
-@Lenses
 final case class Counters(
     uploaded: Int = 0,
     deleted: Int = 0,
     copied: Int = 0,
     errors: Int = 0
 )
+
+object Counters {
+  val uploaded: Lens[Counters, Int] = GenLens[Counters](_.uploaded)
+  val deleted: Lens[Counters, Int]  = GenLens[Counters](_.deleted)
+  val copied: Lens[Counters, Int]   = GenLens[Counters](_.copied)
+  val errors: Lens[Counters, Int]   = GenLens[Counters](_.errors)
+}
diff --git a/core/src/main/scala/net/kemitix/thorp/core/LocalFiles.scala b/core/src/main/scala/net/kemitix/thorp/core/LocalFiles.scala
index 64a31fe..451e47a 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/LocalFiles.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/LocalFiles.scala
@@ -1,9 +1,7 @@
 package net.kemitix.thorp.core
 
-import monocle.macros.Lenses
 import net.kemitix.thorp.domain.LocalFile
 
-@Lenses
 case class LocalFiles(
     localFiles: Stream[LocalFile] = Stream(),
     count: Long = 0,
diff --git a/core/src/main/scala/net/kemitix/thorp/core/SyncPlan.scala b/core/src/main/scala/net/kemitix/thorp/core/SyncPlan.scala
index 0e1e6ea..3e7d5da 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/SyncPlan.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/SyncPlan.scala
@@ -1,9 +1,7 @@
 package net.kemitix.thorp.core
 
-import monocle.macros.Lenses
 import net.kemitix.thorp.domain.SyncTotals
 
-@Lenses
 case class SyncPlan(
     actions: Stream[Action] = Stream(),
     syncTotals: SyncTotals = SyncTotals()
diff --git a/core/src/main/scala/net/kemitix/thorp/core/UnversionedMirrorArchive.scala b/core/src/main/scala/net/kemitix/thorp/core/UnversionedMirrorArchive.scala
index 08f4f50..d353aa6 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/UnversionedMirrorArchive.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/UnversionedMirrorArchive.scala
@@ -1,20 +1,11 @@
 package net.kemitix.thorp.core
 
 import cats.effect.IO
-import monocle.macros.Lenses
 import net.kemitix.thorp.core.Action.{DoNothing, ToCopy, ToDelete, ToUpload}
 import net.kemitix.thorp.domain.StorageQueueEvent.DoNothingQueueEvent
-import net.kemitix.thorp.domain.{
-  Bucket,
-  LocalFile,
-  Logger,
-  StorageQueueEvent,
-  SyncTotals,
-  UploadEventListener
-}
+import net.kemitix.thorp.domain._
 import net.kemitix.thorp.storage.api.StorageService
 
-@Lenses
 case class UnversionedMirrorArchive(
     storageService: StorageService,
     batchMode: Boolean,
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/Bucket.scala b/domain/src/main/scala/net/kemitix/thorp/domain/Bucket.scala
index a153ed6..c152185 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/Bucket.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/Bucket.scala
@@ -1,8 +1,5 @@
 package net.kemitix.thorp.domain
 
-import monocle.macros.Lenses
-
-@Lenses
 final case class Bucket(
     name: String
 )
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/Config.scala b/domain/src/main/scala/net/kemitix/thorp/domain/Config.scala
index aa11441..6389cbc 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/Config.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/Config.scala
@@ -1,8 +1,8 @@
 package net.kemitix.thorp.domain
 
-import monocle.macros.Lenses
+import monocle.Lens
+import monocle.macros.GenLens
 
-@Lenses
 final case class Config(
     bucket: Bucket = Bucket(""),
     prefix: RemoteKey = RemoteKey(""),
@@ -11,3 +11,12 @@ final case class Config(
     batchMode: Boolean = false,
     sources: Sources = Sources(List())
 )
+
+object Config {
+  val sources: Lens[Config, Sources]      = GenLens[Config](_.sources)
+  val bucket: Lens[Config, Bucket]        = GenLens[Config](_.bucket)
+  val prefix: Lens[Config, RemoteKey]     = GenLens[Config](_.prefix)
+  val filters: Lens[Config, List[Filter]] = GenLens[Config](_.filters)
+  val debug: Lens[Config, Boolean]        = GenLens[Config](_.debug)
+  val batchMode: Lens[Config, Boolean]    = GenLens[Config](_.batchMode)
+}
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/Filter.scala b/domain/src/main/scala/net/kemitix/thorp/domain/Filter.scala
index 858d2d1..d8b8a8e 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/Filter.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/Filter.scala
@@ -3,8 +3,6 @@ package net.kemitix.thorp.domain
 import java.nio.file.Path
 import java.util.regex.Pattern
 
-import monocle.macros.Lenses
-
 sealed trait Filter
 
 object Filter {
@@ -32,7 +30,6 @@ object Filter {
     }
   }
 
-  @Lenses
   case class Include(
       include: String = ".*"
   ) extends Filter {
@@ -43,7 +40,6 @@ object Filter {
 
   }
 
-  @Lenses
   case class Exclude(
       exclude: String
   ) extends Filter {
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/HashModified.scala b/domain/src/main/scala/net/kemitix/thorp/domain/HashModified.scala
index 44530ef..c752573 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/HashModified.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/HashModified.scala
@@ -1,8 +1,5 @@
 package net.kemitix.thorp.domain
 
-import monocle.macros.Lenses
-
-@Lenses
 final case class HashModified(
     hash: MD5Hash,
     modified: LastModified
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/KeyModified.scala b/domain/src/main/scala/net/kemitix/thorp/domain/KeyModified.scala
index 0a6e4ec..6627497 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/KeyModified.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/KeyModified.scala
@@ -1,8 +1,5 @@
 package net.kemitix.thorp.domain
 
-import monocle.macros.Lenses
-
-@Lenses
 final case class KeyModified(
     key: RemoteKey,
     modified: LastModified
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/LastModified.scala b/domain/src/main/scala/net/kemitix/thorp/domain/LastModified.scala
index f500f30..0e74f99 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/LastModified.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/LastModified.scala
@@ -2,9 +2,6 @@ package net.kemitix.thorp.domain
 
 import java.time.Instant
 
-import monocle.macros.Lenses
-
-@Lenses
 final case class LastModified(
     when: Instant = Instant.now
 )
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/LocalFile.scala b/domain/src/main/scala/net/kemitix/thorp/domain/LocalFile.scala
index 30364dd..4688e9e 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/LocalFile.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/LocalFile.scala
@@ -3,9 +3,9 @@ package net.kemitix.thorp.domain
 import java.io.File
 import java.nio.file.Path
 
-import monocle.macros.Lenses
+import monocle.Lens
+import monocle.macros.GenLens
 
-@Lenses
 final case class LocalFile(
     file: File,
     source: File,
@@ -41,4 +41,5 @@ object LocalFile {
               pathToKey(resolvedPath))
   }
 
+  val remoteKey: Lens[LocalFile, RemoteKey] = GenLens[LocalFile](_.remoteKey)
 }
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/MD5Hash.scala b/domain/src/main/scala/net/kemitix/thorp/domain/MD5Hash.scala
index 457b0de..4210f13 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/MD5Hash.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/MD5Hash.scala
@@ -4,9 +4,6 @@ import java.util.Base64
 
 import net.kemitix.thorp.domain.QuoteStripper.stripQuotes
 
-import monocle.macros.Lenses
-
-@Lenses
 final case class MD5Hash(
     in: String
 ) {
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/RemoteKey.scala b/domain/src/main/scala/net/kemitix/thorp/domain/RemoteKey.scala
index a8a824e..0c3ed34 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/RemoteKey.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/RemoteKey.scala
@@ -3,9 +3,8 @@ package net.kemitix.thorp.domain
 import java.io.File
 import java.nio.file.{Path, Paths}
 
-import monocle.macros.Lenses
+import monocle.macros.GenLens
 
-@Lenses
 final case class RemoteKey(
     key: String
 ) {
@@ -38,3 +37,7 @@ final case class RemoteKey(
     RemoteKey(List(key, path).filterNot(_.isEmpty).mkString("/"))
 
 }
+
+object RemoteKey {
+  val key = GenLens[RemoteKey](_.key)
+}
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/RemoteMetaData.scala b/domain/src/main/scala/net/kemitix/thorp/domain/RemoteMetaData.scala
index 75c8066..a55b46e 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/RemoteMetaData.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/RemoteMetaData.scala
@@ -1,8 +1,5 @@
 package net.kemitix.thorp.domain
 
-import monocle.macros.Lenses
-
-@Lenses
 final case class RemoteMetaData(
     remoteKey: RemoteKey,
     hash: MD5Hash,
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/S3MetaData.scala b/domain/src/main/scala/net/kemitix/thorp/domain/S3MetaData.scala
index f350c02..93ba71e 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/S3MetaData.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/S3MetaData.scala
@@ -1,9 +1,6 @@
 package net.kemitix.thorp.domain
 
-import monocle.macros.Lenses
-
 // For the LocalFile, the set of matching S3 objects with the same MD5Hash, and any S3 object with the same remote key
-@Lenses
 final case class S3MetaData(
     localFile: LocalFile,
     matchByHash: Set[RemoteMetaData],
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/S3ObjectsData.scala b/domain/src/main/scala/net/kemitix/thorp/domain/S3ObjectsData.scala
index be5b66d..72b0aed 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/S3ObjectsData.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/S3ObjectsData.scala
@@ -1,12 +1,8 @@
 package net.kemitix.thorp.domain
 
-import monocle.macros.Lenses
-
 /**
   * A list of objects and their MD5 hash values.
   */
-
-@Lenses
 final case class S3ObjectsData(
     byHash: Map[MD5Hash, Set[KeyModified]] = Map.empty,
     byKey: Map[RemoteKey, HashModified] = Map.empty
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/Sources.scala b/domain/src/main/scala/net/kemitix/thorp/domain/Sources.scala
index 2652787..fbdb4e9 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/Sources.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/Sources.scala
@@ -2,8 +2,6 @@ package net.kemitix.thorp.domain
 
 import java.nio.file.Path
 
-import monocle.macros.Lenses
-
 /**
   * The paths to synchronise with target.
   *
@@ -14,7 +12,6 @@ import monocle.macros.Lenses
   *
   * A path should only occur once in paths.
   */
-@Lenses
 case class Sources(
     paths: List[Path]
 ) {
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/StorageQueueEvent.scala b/domain/src/main/scala/net/kemitix/thorp/domain/StorageQueueEvent.scala
index 9ca41fb..31e7e8d 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/StorageQueueEvent.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/StorageQueueEvent.scala
@@ -1,7 +1,5 @@
 package net.kemitix.thorp.domain
 
-import monocle.macros.Lenses
-
 sealed trait StorageQueueEvent {
 
   val order: Int
@@ -10,21 +8,18 @@ sealed trait StorageQueueEvent {
 
 object StorageQueueEvent {
 
-  @Lenses
   final case class DoNothingQueueEvent(
       remoteKey: RemoteKey
   ) extends StorageQueueEvent {
     override val order: Int = 0
   }
 
-  @Lenses
   final case class CopyQueueEvent(
       remoteKey: RemoteKey
   ) extends StorageQueueEvent {
     override val order: Int = 1
   }
 
-  @Lenses
   final case class UploadQueueEvent(
       remoteKey: RemoteKey,
       md5Hash: MD5Hash
@@ -32,14 +27,12 @@ object StorageQueueEvent {
     override val order: Int = 2
   }
 
-  @Lenses
   final case class DeleteQueueEvent(
       remoteKey: RemoteKey
   ) extends StorageQueueEvent {
     override val order: Int = 3
   }
 
-  @Lenses
   final case class ErrorQueueEvent(
       remoteKey: RemoteKey,
       e: Throwable
@@ -47,7 +40,6 @@ object StorageQueueEvent {
     override val order: Int = 10
   }
 
-  @Lenses
   final case class ShutdownQueueEvent() extends StorageQueueEvent {
     override val order: Int = 99
   }
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/SyncTotals.scala b/domain/src/main/scala/net/kemitix/thorp/domain/SyncTotals.scala
index 2ffb1b9..7358e2b 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/SyncTotals.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/SyncTotals.scala
@@ -1,8 +1,5 @@
 package net.kemitix.thorp.domain
 
-import monocle.macros.Lenses
-
-@Lenses
 case class SyncTotals(
     count: Long = 0L,
     totalSizeBytes: Long = 0L,
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/UploadEvent.scala b/domain/src/main/scala/net/kemitix/thorp/domain/UploadEvent.scala
index 811d32f..d416904 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/UploadEvent.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/UploadEvent.scala
@@ -1,26 +1,21 @@
 package net.kemitix.thorp.domain
 
-import monocle.macros.Lenses
-
 sealed trait UploadEvent {
   def name: String
 }
 
 object UploadEvent {
 
-  @Lenses
   final case class TransferEvent(
       name: String
   ) extends UploadEvent
 
-  @Lenses
   final case class RequestEvent(
       name: String,
       bytes: Long,
       transferred: Long
   ) extends UploadEvent
 
-  @Lenses
   final case class ByteTransferEvent(
       name: String
   ) extends UploadEvent
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/UploadEventListener.scala b/domain/src/main/scala/net/kemitix/thorp/domain/UploadEventListener.scala
index 7f905d0..48e1cbf 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/UploadEventListener.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/UploadEventListener.scala
@@ -3,9 +3,6 @@ package net.kemitix.thorp.domain
 import net.kemitix.thorp.domain.UploadEvent.RequestEvent
 import net.kemitix.thorp.domain.UploadEventLogger.logRequestCycle
 
-import monocle.macros.Lenses
-
-@Lenses
 case class UploadEventListener(
     localFile: LocalFile,
     index: Int,