silence binary incompatible changes

The following classes have binary incompatible changes.
  - sangria.schema.ProjectedName
  - sangria.schema.Args

build.sbt

@@ -7,6 +7,7 @@ import sbt.Keys.{
   scmInfo,
   startYear
 }
+import com.typesafe.tools.mima.core.{ProblemFilters, Problem}
 
 // sbt-github-actions needs configuration in `ThisBuild`
 ThisBuild / crossScalaVersions := Seq("2.12.13", "2.13.4")
@@ -17,6 +18,12 @@ ThisBuild / githubWorkflowBuildPreamble ++= List(
   WorkflowStep.Sbt(List("scalafmtCheckAll"), name = Some("Check formatting"))
 )
 
+// Binary Incompatible Changes, we'll document.
+ThisBuild / mimaBinaryIssueFilters ++= Seq(
+  ProblemFilters.exclude[Problem]("sangria.schema.ProjectedName*"),
+  ProblemFilters.exclude[Problem]("sangria.schema.Args*")
+)
+
 lazy val root = project
   .in(file("."))
   .withId("sangria-root")
@@ -130,4 +137,4 @@ lazy val noPublishSettings = Seq(
   publish := {},
   publishLocal := {},
   publishArtifact := false
-)
+)