and 'fuzzy' matching when not found
handled via cdxdomainspecific.py
BaseCDXServer contains a canonicalizer object and a fuzzy query
canonicalizer abstracted to seperate class (in canonicalizer.py)
clean up cdx related exceptions
default rules read from cdx/rules.yaml
filename configurable via 'domain_specific_rules' setting in config.yaml
fix typo in pywb/rewrite
move to distinct packages: pywb.utils, pywb.cdx, pywb.warc, pywb.util, pywb.rewrite!
each package will have its own README and tests
shared sample_data and install