NeoRank Module
Merge branch 'flow-changes' into flow

Conflicts:
	crawler/src/main/java/com/graphaware/crawler/CrawlerRuntimeModule.java
	crawler/src/main/java/com/graphaware/crawler/bootstrap/CrawlerModuleBootstrapper.java
	crawler/src/main/java/com/graphaware/crawler/internal/PerpetualGraphCrawler.java
	crawler/src/test/java/com/graphaware/crawler/integration/ArbitraryTest.java