Push required Echo version to 3.0.0

Author: bentolor

ant.properties

@@ -1,5 +1,5 @@
 release.version                         3.1.0-SNAPSHOT
-echo.version                            3.0
+echo.version                            3.0.0
 
 ant.build.javac.source                  1.4
 ant.build.javac.target                  1.4
@@ -91,4 +91,4 @@ javadoc.cssfile                         ${dir.resource}/javadoc.css
 maven.repository.snapshots.id           sonatype-nexus-snapshots
 maven.repository.snapshots.url          https://oss.sonatype.org/content/repositories/snapshots/
 maven.repository.staging.id             sonatype-nexus-staging
-maven.repository.staging.url            https://oss.sonatype.org/service/local/staging/deploy/maven2/
+maven.repository.staging.url            https://oss.sonatype.org/service/local/staging/deploy/maven2/