Drop 0.13.x support for new IO library

Author: er1c

.github/workflows/ci.yml

@@ -13,12 +13,8 @@ jobs:
         include:
           - java: 8
             scala: 2.12.8
-          - java: 8
-            scala: 2.10.7
           - java: 11
             scala: 2.12.8
-          - java: 11
-            scala: 2.10.7
     env:
       # define Java options for both official sbt and sbt-extras
       JAVA_OPTS: -Xms2048M -Xmx2048M -Xss6M -XX:ReservedCodeCacheSize=256M -Dfile.encoding=UTF-8

build.sbt

@@ -2,8 +2,8 @@ ThisBuild / version := "1.2.0-SNAPSHOT"
 ThisBuild / organization := "com.eed3si9n"
 
 def scala212 = "2.12.8"
-def scala210 = "2.10.7"
-ThisBuild / crossScalaVersions := Seq(scala212, scala210)
+//def scala210 = "2.10.7"
+ThisBuild / crossScalaVersions := Seq(scala212/*, scala210*/)
 ThisBuild / scalaVersion := scala212
 
 lazy val root = (project in file("."))
@@ -19,7 +19,7 @@ lazy val root = (project in file("."))
     )
     (pluginCrossBuild / sbtVersion) := {
       scalaBinaryVersion.value match {
-        case "2.10" => "0.13.18"
+        //case "2.10" => "0.13.18"
         case "2.12" => "1.2.8"
       }
     }