Release 0.6.8
- bugfix in ``HTMLTable.to_csv`` for Python 3 related to writing non-ascii characters to csv file
- Link to new example added to readme
- session added property index_rev, which now is used to save index in file
- bugfix in ``utils.AttrDict.__dir__`` method. now it works allowing IPython auto-comlete for
objects that use ``utils.AttrDict`` class
- better support of last IPython shell
- prefetching:
- bugfix: some times when passed few fields with
same names, prefetch raises strange errors (atleast on odoo 7.0 instance)
- improvement: prefetch only records that have no atleast one field in cache