luke-5.3.0

This release runs on Java8 and does not run on Java7.

This release includes a number of pull requests and github issues. Worth mentioning:

#38 upgrade to 5.3.0 itself

#28 Added LUKE_PATH env variable to luke.sh
#35 Added copy, cut, paste etc. shortcuts, using Mac command key
#34 Fixed lastAnalyzer retrieval (this feature remembers the last used analyzer on the Search tab)
#31 200 stargazers on github (by the time of this release the number crossed 250). Luke community is growing.