Update Tycho and eclipse versions.

Signed-off-by: Greg Watson <g.watson@computer.org>

pom.xml

diff --git a/pom.xml b/pom.xml
index f0bd0bd..c206a84 100644
--- a/pom.xml
+++ b/pom.xml
@@ -16,8 +16,8 @@
 	<properties>
 		<ptp-version>nightly</ptp-version>
 		<remote-version>nightly</remote-version>
-		<tycho-version>1.3.0</tycho-version>
-		<eclipse-release>2018-12</eclipse-release>
+		<tycho-version>1.4.0</tycho-version>
+		<eclipse-release>2019-06</eclipse-release>
 		<!-->eclipse-site>http://download.eclipse.org/releases/${eclipse-release}</eclipse-site-->
 		<eclipse-site>http://download.eclipse.org/staging/${eclipse-release}</eclipse-site>
 		<ptp-site>http://download.eclipse.org/tools/ptp/builds/${ptp-version}</ptp-site>