update readme, tweak build

.github/workflows/ci.yml

@@ -2,20 +2,20 @@ name: test
 on:
   push:
     branches:
-      - main
+      - 2.13.x
   pull_request:
 jobs:
   test:
     strategy:
       fail-fast: false
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - uses: coursier/cache-action@v6
-    - uses: actions/setup-java@v2
+    - uses: actions/setup-java@v3
       with:
         distribution: temurin
         java-version: 8
     - name: Test
       # This runs the template with the default parameters, and runs test within the templated app.
-      run: sbt -Dfile.encoding=UTF8 -J-XX:ReservedCodeCacheSize=256M test
+      run: sbt -Dfile.encoding=UTF8 test

README.md

@@ -1,12 +1,20 @@
-This is a [Giter8][g8] template for Scala.
+# Scala 2 seed template
+
+## Template usage
+
+This is a [Giter8][g8] template for Scala 2.
 
 ```
 sbt new scala/scala-seed.g8
 ```
 
-Template license
-----------------
-Written in 2016-2021 by Lightbend, Inc.
+## Looking for Scala 3 instead?
+
+That's over at https://github.com/scala/scala3.g8
+
+# Template license
+
+Written in 2016-2023 by Lightbend, Inc.
 
 To the extent possible under law, the author(s) have dedicated all copyright and related
 and neighboring rights to this template to the public domain worldwide.

build.sbt

@@ -6,6 +6,6 @@ lazy val root = (project in file(".")).
     Test / test := {
       val _ = (Test / g8Test).toTask("").value
     },
-    scriptedLaunchOpts ++= List("-Xms1024m", "-Xmx1024m", "-XX:ReservedCodeCacheSize=128m", "-XX:MaxPermSize=256m", "-Xss2m", "-Dfile.encoding=UTF-8"),
+    scriptedLaunchOpts ++= List("-Xms1024m", "-Xmx1024m", "-Xss2m", "-Dfile.encoding=UTF-8"),
     resolvers += Resolver.url("typesafe", url("https://repo.typesafe.com/typesafe/ivy-releases/"))(Resolver.ivyStylePatterns)
   )