Cwb-ccc

- re-factor concordances
- fix cached query results (NQRs)
- fix s-attribute selection
- collocates and keywords on p-att combinations
- update demos & README

- some bugfixes
- improve usability

- some bugfixes
- include cqpy support
- bespoke test corpus

- some minor bugfixes
- CQPY support

- implemented UFA
- extended tests

- the interface should now be stable
- further work to version 1.0.0 will be focused on (1) extending tests and (2) implementing UFA