Fixed update version problem that updated all props ending in "version"

Conflicts:
	src/main/groovy/net/researchgate/release/PluginHelper.groovy

Author: Mark Turner2

src/main/groovy/net/researchgate/release/PluginHelper.groovy

@@ -87,8 +87,8 @@ class PluginHelper {
         try {
             // we use replace here as other ant tasks escape and modify the whole file
             project.ant.replaceregexp(file: file, byline: true) {
-                regexp(pattern: "$key(\\s*)=(\\s*).+")
-                substitution(expression: "$key\\1=\\2$version")
+                regexp(pattern: "^(\\s*)$key(\\s*)=(\\s*).+")
+                substitution(expression: "\\1$key\\2=\\3$version")
             }
         } catch (BuildException be) {
             throw new GradleException('Unable to write version property.', be)

src/test/groovy/net/researchgate/release/PluginHelperVersionPropertyFileTests.groovy

@@ -118,6 +118,7 @@ public class PluginHelperVersionPropertyFileTests extends Specification {
         props.withWriter {
             it << "version=${project.version}\n"
             it << "something=http://www.gradle.org/test\n"
+            it << "  another.prop.version =  1.1\n"
         }
         project.createScmAdapter.execute()
         when:
@@ -128,5 +129,6 @@ public class PluginHelperVersionPropertyFileTests extends Specification {
         noExceptionThrown()
         lines[0] == 'version=3.1'
         lines[1] == 'something=http://www.gradle.org/test'
+        lines[2] == '  another.prop.version =  1.1'
     }
 }