Allow user to label every Nth contour line [1375]
Merge pull request #22 from tommyjasmin/master

Allow user to label every Nth contour line [1375]
add a few custom javadoc tags, update API links [1055]
Merge pull request #23 from tommyjasmin/master

add a few custom javadoc tags, update API links [1055]
change empty string check to be backward-compatile with Java 1.5 [0]
Merge pull request #24 from tommyjasmin/master

change empty string check to be backward-compatile with Java 1.5 [0]