v2.0.0

This is a huge update of the sru-queryer library. Below is a list of the breaking changes, bug fixes, and enhancements included in this new release.

Breaking Changes

• Removed imports for SRUUtil, SRUConfiguration and Query class in favor of a simplified interface 'SRUQueryer'
• Removed 'drivers' in favor of an automatic explainResponse parser
• Refactored IndexQuery class and parameters to match with SRU documentation (now called 'SearchClause')
• Refactored Modifiers argument order and names to match SRU documentation and be more intuitive
• Refactored available record schema format to include Identifier as a property on the record schema instead of as a seperate record schema.
• Removed unnecessary separate SRU server links in favor of a single link when creating the SRU server configuration
• Refactored LITERAL to RawCQL

Enhancements

• As mentioned, drivers are no longer needed!
• No more dealing with 3 different classes, plus the requests module, for sending SRU requests
• The new SRUQueryer class can send the search_retrieve requests for you and return the content, with or without validation. That means you don't need to deal with 'requests' and Sessions if you don't want to
• Improved error handling and error messages in explainResponse parsing
• Basic logging
• Readme includes known incompatibilities with some important SRU servers
• Performed further testing on SRU servers
• Improved test coverage and removed confusing/redundant tests

Bug Fixes

• Fixed bug where certain relations for SearchClauses don't include spaces when needed
• Fixed bug where default context set was not allowed without a default index
• Fixed bug where maximum records returned could not be greater than start_record
• Fixed a bug where SRU defaults were not being validated
• Removed incorrect practice of allowing record schema identifiers to be used in place of record schema names in queries
• Fixed bug where queries with a single search term included multiple equals signs