Merge branch 'purge_and_sanitize' into 'master'

Purge and sanitize table storage format

This is a patch against the latest stable to prepare it for the SimCheck work.  Currently the table has a mixture of how text entries are stored, for no apparent reason.  Examples include this mixture, so it does appear to be a useless difference.  This version introduces a way to upgrade tables, and makes use of that to remove a redundant cell array for TE's generated with the tool.  There should be no functional difference.

Also, this includes a commit to remove changes that would occur to the table upon an open/close cycle, even though the table wouldn't actually change.  This just makes the table behave better in the context of a SCM.

I've updated the version numbers, and it would be good to get this out there now so that the SimCheck work can be used against tables sooner, without having to re-save as many tables.