0.7.0

• remove Enactment download functions (use Legislice download client instead)
• remove Opinion download functions (use CAPClient class instead)
• use different Legislice schema imports for JSON and YAML
• move fake download client to separate module
• add read methods to CAP opinion download client
• add read methods to CAPClient
• DecisionSchema can accept months instead of dates
• merge CAPCitation and CAPCitationTo schemas
• Holding has separate add_enactment and with_enactment methods
• Rule has separate add_enactment and with_enactment methods
• Rule has separate add_factor and with_factor methods
• Procedure has separate add_factor and with_factor methods
• increase versions of Nettlesome and Legislice dependencies
• add CAPClient to top level of package
• add "Creating and Loading Holding Data" documentation page
• Rules select all text of Enactments without selected text only during init, not during schema load
• change field name from "quotes" to "anchors" in YAML import files
• fix bug: dump methods couldn't find Decision and Opinion schemas