[release] Bump versions to prep for release

Author: cgruber

core/pom.xml

@@ -22,7 +22,7 @@
   <parent>
     <groupId>com.google.googlejavaformat</groupId>
     <artifactId>google-java-format-parent</artifactId>
-    <version>0.1-SNAPSHOT</version>
+    <version>0.1-alpha</version>
   </parent>
 
   <artifactId>google-java-format</artifactId>

idea_plugin/pom.xml

@@ -21,7 +21,7 @@
   <parent>
     <groupId>com.google.googlejavaformat</groupId>
     <artifactId>google-java-format-parent</artifactId>
-    <version>0.1-SNAPSHOT</version>
+    <version>0.1-alpha</version>
   </parent>
 
   <artifactId>google-java-format-idea-plugin</artifactId>
@@ -41,7 +41,7 @@
     <dependency>
       <groupId>com.google.googlejavaformat</groupId>
       <artifactId>google-java-format</artifactId>
-      <version>0.1-SNAPSHOT</version>
+      <version>0.1-alpha</version>
     </dependency>
 
     <!--

pom.xml

@@ -28,7 +28,7 @@
   <groupId>com.google.googlejavaformat</groupId>
   <artifactId>google-java-format-parent</artifactId>
   <packaging>pom</packaging>
-  <version>0.1-SNAPSHOT</version>
+  <version>0.1-alpha</version>
 
   <modules>
     <module>core</module>