[dynect|dns] dramatically improve speed ...

... of 'get_all_records' request and 'records.all' method.

previously 4 minutes on a domain with many records (266), now around 5 seconds on same domain.
this is enabled by a parameter to the 'get_all_records' request, detail=y. Which returns full records, rather than resource URLs.
Thanks for the clarification, just thought it worth double checking.