[dataimport] turn eids_seq_{start,range} into class attributes
Only the master-mode store will actually use eids_seq_start to reset the
eid sequence.
Document: cubicweb-doc
Title: CubicWeb documentation
Author: Logilab
Abstract: Some base documentation for CubicWeb users and developpers
Section: Apps/Programming
Format: HTML
Index: /usr/share/doc/cubicweb-documentation/index.html
Files: /usr/share/doc/cubicweb-documentation/*.html