Update versions for 2019.2.1 release (#298)

Author: PeterJohnson

examples/cpp/build.gradle

@@ -1,7 +1,7 @@
 plugins {
     id "cpp"
     id "google-test-test-suite"
-    id "edu.wpi.first.GradleRIO" version "2019.1.1"
+    id "edu.wpi.first.GradleRIO" version "2019.2.1"
 }
 
 // Define my targets (RoboRIO) and artifacts (deployable files)

examples/java/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id "java"
-    id "edu.wpi.first.GradleRIO" version "2019.1.1"
+    id "edu.wpi.first.GradleRIO" version "2019.2.1"
 }
 
 def ROBOT_MAIN_CLASS = "frc.team0000.robot.Main"

examples/kotlin/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id "org.jetbrains.kotlin.jvm" version "1.3.11"
-    id "edu.wpi.first.GradleRIO" version "2019.1.1"
+    id "edu.wpi.first.GradleRIO" version "2019.2.1"
 }
 
 def ROBOT_MAIN_CLASS = "frc.team0000.robot.MainKt"

src/main/groovy/edu/wpi/first/gradlerio/wpi/WPIExtension.groovy

@@ -12,7 +12,7 @@ import javax.inject.Inject
 @CompileStatic
 class WPIExtension {
     // WPILib (first.wpi.edu/FRC/roborio/maven) libs
-    String wpilibVersion = "2019.1.1"
+    String wpilibVersion = "2019.2.1"
     String niLibrariesVersion = "2019.12.1"
     String opencvVersion = "3.4.4-4"
     static final String[] validImageVersions = ['2019_v12', '2019_v13']
@@ -24,11 +24,11 @@ class WPIExtension {
     String jreArtifactLocation = "edu.wpi.first.jdk:roborio-2019:11.0.1u13-1"
 
     // WPILib (first.wpi.edu/FRC/roborio/maven) Utilities
-    String smartDashboardVersion = "2019.1.1"
-    String shuffleboardVersion = "2019.1.1"
-    String outlineViewerVersion = "2019.1.1"
-    String robotBuilderVersion = "2019.1.1"
-    String pathWeaverVersion = "2019.1.1"
+    String smartDashboardVersion = "2019.2.1"
+    String shuffleboardVersion = "2019.2.1"
+    String outlineViewerVersion = "2019.2.1"
+    String robotBuilderVersion = "2019.2.1"
+    String pathWeaverVersion = "2019.2.1"
 
     // WPILib Toolchain (https://github.com/wpilibsuite/toolchain-builder/releases/latest) version and tag
     String toolchainTag = 'v2019-3'