upgrade scala to 2.13.7 and release sequentially (#111)

* upgrade scala to 2.13.7 and release sequentially

* refactor build

* upgrade odb

* fix build setup

Author: mpollmeier

.github/workflows/release.yml

@@ -5,6 +5,7 @@ on:
     tags: ["*"]
 jobs:
   release:
+    concurrency: release
     runs-on: ubuntu-18.04
     steps:
       - uses: actions/checkout@v2

codegen/src/main/scala/overflowdb/schema/Schema.scala

@@ -178,8 +178,11 @@ class Property[A](val name: String,
 
   def default: Option[Default[A]] =
     _cardinality match {
-      case c: Cardinality.One[A] => Option(c.default)
-      case _ => None
+      case c: Cardinality.One[_] =>
+        // casting is safe here because only `mandatory(A)` can set the value
+        Option(c.default).map(_.asInstanceOf[Default[A]])
+      case _ =>
+        None
     }
 
   /** make this a list property, using a regular Sequence, with linear (slow) random access */

integration-tests/build.sbt

@@ -5,7 +5,7 @@ val generateDomainClasses = taskKey[Seq[File]]("generate overflowdb domain class
 val schemas = project.in(file("schemas"))
   .dependsOn(Projects.codegen_2_13)
   .settings(
-    scalaVersion := "2.13.6",
+    scalaVersion := Versions.scala_2_13,
     generateDomainClasses := Def.task {
       val outputRoot = target.value / "odb-codegen"
       FileUtils.deleteRecursively(outputRoot)
@@ -16,7 +16,7 @@ val schemas = project.in(file("schemas"))
 
 val integrationTests = project.in(file("tests"))
   .settings(
-    scalaVersion := "2.13.6",
+    scalaVersion := Versions.scala_2_13,
     libraryDependencies ++= Seq(
       "io.shiftleft" %% "overflowdb-traversal" % Versions.overflowdb,
       "org.scalatest" %% "scalatest" % "3.2.9" % Test,

project/Build.scala

@@ -1,17 +1,19 @@
 import sbt._
 import com.lucidchart.sbtcross.BaseProject
 
+object Versions {
+  val overflowdb = "1.69"
+  val scala_2_12 = "2.12.15"
+  val scala_2_13 = "2.13.7"
+}
+
 object Projects {
   /** scala cross version settings for codegen:
     * we need scala 2.12 for the sbt plugin and 2.13 for everything else */
   lazy val codegen = BaseProject(project.in(file("codegen"))).cross
-  lazy val codegen_2_12 = codegen("2.12.4")
-  lazy val codegen_2_13 = codegen("2.13.6")
+  lazy val codegen_2_12 = codegen(Versions.scala_2_12)
+  lazy val codegen_2_13 = codegen(Versions.scala_2_13)
 
   lazy val sbtPlugin = project.in(file("sbt-overflowdb"))
   lazy val integrationTests = project.in(file("integration-tests"))
 }
-
-object Versions {
-  val overflowdb = "1.62"
-}