Made the plugins stateful
Wrote tests to prove #159
The GuidedCrawlingPlugin invocation point is not used in any of our plugins currently. Thus, delete it
delete the GuidedCrawling plugin point
domStatesChangesAreEqualToNumberOfStates testcase cotained a bug that is now resolved
DomNotifierpluing can be one of the followers of OnUrlLoadPlugin
Improved confiration builder messages and allowence
Fixed typo. More builder argument checks.
Show the crawljax version in the crawl overview output
Improved the integration test
Wrote tests for CLI
You can now crawl hidden anchors from CLI
Added more options to the CLI

Added:
- Clickables
- wait after event
- wait after URL load
- Crawl time out
Logging can now also be specified in CLI
Fixed broken tests
More test fixing
Merge remote-tracking branch 'origin/better-error-messages' into cli-option-to-crawl-hidden-anchors
Fixed concurrency bug in the overview plugin
Fixed concurrency problem in Crawler SFG interation
Fixed the bug in crawler