updated pom, optimized code for java 11, removed target folder from git

.gitignore

pom.xml

...ain/java/plugins/adufour/distancetransforms/Chamfer3.java

...ain/java/plugins/adufour/distancetransforms/Chamfer5.java

.../adufour/distancetransforms/ChamferDistanceTransform.java

...plugins/adufour/distancetransforms/DistanceTransform.java

.../plugins/adufour/distancetransforms/ROIToDistanceMap.java

target/allclasses-frame.html

target/allclasses-noframe.html

...classes/plugins/adufour/distancetransforms/Chamfer3.class

...classes/plugins/adufour/distancetransforms/Chamfer5.class

...ufour/distancetransforms/ChamferDistanceTransform$1.class

...adufour/distancetransforms/ChamferDistanceTransform.class

...lugins/adufour/distancetransforms/DistanceTransform.class

...plugins/adufour/distancetransforms/ROIToDistanceMap.class

target/constant-values.html

target/deprecated-list.html

target/help-doc.html

target/index-all.html

target/index.html