remove old profiling stuff
remove eclipse stuff and add to .gitignore (except .settings which has code formatting config)
remove more eclipse stuff, people like to manage their own
update source/target version to 1.6 since we use 1.6 features, specifically @Override for methods only implementing an interface (not sure why maven wasn't enforcing this); also remove maven-antrun-plugin created timestamp.txt, doesn't seem to be used anywhere
add more eclipse stuff to .gitignore