Use stdio for passing JSON between Perl and python
Handle missing temperatures in Obsid.pm
Make starcheck a python package

Use starcheck.version in starcheck.calc_ccd_temps.
Add PYTHONPATH to sandbox_starcheck to support its use.
Call calc_ccd_temps as runnable module
Remove chandra_models lookup in calc_ccd_temps

Code will use versioned spec file in starcheck characteristics.
Add a name-label to errors from python code in Perl
Remove max of this or next obsid code

We're already getting a max of this or next from the python
Flush output (stdout) instead of closing
Break temperature calculation into pieces

Use an interval determination routine and a temperature calculation routine for each
interval.
Change output of calc_ccd_temps to include optional 'text'

The output is now a JSON dictionary of dictionaries instead of a
single-level dictionary.  The new 'text' key can hold text to indicate
if the interval includes the span through the next obsid in the
case of no following maneuver.