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UPGRADE URGENCY: MODERATE, crashes on CentOS have been fixed and new commands/options are available
FEATURES:
* dphenome trim: new command to cut all PM data to the same time step
* The 'area' parameter is greater in longer PM curves, even if the curve shape is equal
* dphenome purge: new purging policy ('replica') to remove a distinct replica by its ID
* dape, dgenome, dphenome start: new option (-y) to fetch kegg data with unstable connections
BUGFIXES:
* dphenome start: support older scipy versions
* dphenome start: support newer scikits.learn versions
* dape, dgenome, dphenome start: correctly exit when kegg data fetch fails