bump the version of opsin we are using to 2.5.0 (#86)

Author: greglandrum

org.rdkit.knime.nodes/META-INF/MANIFEST.MF

@@ -61,4 +61,4 @@ Export-Package: org.rdkit.knime.nodes,
 Bundle-Activator: org.rdkit.knime.nodes.RDKitNodePlugin
 Bundle-ActivationPolicy: lazy
 Bundle-ClassPath: .,
- lib/opsin-1.3.0-jar-with-dependencies.jar
+ lib/opsin-2.5.0-excludingInChI-jar-with-dependencies.jar

org.rdkit.knime.nodes/build.properties

@@ -4,7 +4,7 @@ output.. = bin/
 bin.includes = META-INF/,\
                .,\
                plugin.xml,\
-               lib/opsin-1.3.0-jar-with-dependencies.jar,\
+               lib/opsin-2.5.0-excludingInChI-jar-with-dependencies.jar,\
                icons/
-jars.extra.classpath = lib/opsin-1.3.0-jar-with-dependencies.jar,\
+jars.extra.classpath = lib/opsin-2.5.0-excludingInChI-jar-with-dependencies.jar,\
 					   platform:/plugin/org.rdkit.knime.types/lib/org.RDKit.jar