Merge pull request #280 from dennisameling/issue-279

[typescript-angular] Update default Angular version from 4.3 to 6.0

src/main/java/io/swagger/codegen/v3/generators/typescript/TypeScriptAngularClientCodegen.java

@@ -119,7 +119,7 @@ public void processOpts() {
         if (additionalProperties.containsKey(NG_VERSION)) {
             ngVersion = new SemVer(additionalProperties.get(NG_VERSION).toString());
         } else {
-            ngVersion = new SemVer("4.3.0");
+            ngVersion = new SemVer("6.0.0");
             LOGGER.info("generating code for Angular {} ...", ngVersion);
             LOGGER.info("  (you can select the angular version by setting the additionalProperty ngVersion)");
         }