Revise CiteCollection schemas, and update TI class for new TI schema.
Final change to Collection rng.
Add indexRelations.
Add proper namespace to XML element.
Modify element for extensionImplementation.
Start work on Citable site.
Text indexing.
Implement CITE Extensions methods
Add initial draft text for specs
Update specs
Add concordion configuration
Update with note on concordion.
Bump version for intermediate release.
add URL decode/encode
Merge branch 'master' into ctsurn1

Conflicts:
	build.gradle
	src/main/groovy/edu/harvard/chs/cite/CtsUrn.groovy
	src/test/groovy/edu/harvard/chs/cite/TestCtsUrnEncoding.groovy
Expand spec for CTS URNs