Merged. Meter extended with static cache.
Modified .gitignore. Added javadoc jar.
Merge branch 'master' into unit-composition

Conflicts:
	src/main/java/sius/unit/length/MeterImpl.java
	target/sius-0.0.1-SNAPSHOT-javadoc.jar
	target/sius-0.0.1-SNAPSHOT-sources.jar
	target/sius-0.0.1-SNAPSHOT.jar