No need for nested array structure in findFieldsInTableSpec
Beefed up checking around table spec config, plus tests
Removed requirement for check against configured nested counts. Check nested counts conform to spec
Removed requirement for check against configured nested counts. Check nested counts conform to spec
Added doCount on join
Merge branch 'adding-count-and-regex-to-tablespec' of https://github.com/talis/tripod-php into adding-count-and-regex-to-tablespec