* 2020-Dec-28:
- add formulas for planets.nu overpopulation-eat-supplies calculations
* 2020-Mar-10:
- bugfix: incorrect next-turn population for bad-climate planets in "Colonist / Native tax, happiness, growth & death"
* 2019-Jul-31:
- add PHost version of "Planet / Starbase Defense"
* 2019-Apr-20:
- various fixes related to climate death rate and overpopulation
- replace text input fields with numeric input fields where applicable
* 2018-Nov-29:
- added population growth charts for PHost
* 2017-Mar-29:
- added "Starbase Tech Levels Upgrade Cost"
* 2017-Mar-27:
- native growth incorrect if native happiness below 70
- native growth incorrect if native happiness below 0 (civil war)
* 2017-Jan-08:
- added "Towed Mass" option fuel consumption calculation
* 2016-May-11:
- added "Crystal Improved Desert Habitation" options for planets.nu
* 2016-Mar-01:
- added "Fuel Consumption" section
* 2016-Jan-18:
- "Ion Storms" incorrectly limited engine tech to 9 instead of 10
- "Mine Hit Damage"
* 2015-Jun-14:
- "Planet / Starbase Defense" added section about average number of torpedoes to destroy planet/base (ignoring beams and fighters)
* 2015-Jun-14:
- "Planet Structures" section changed to non-blocking warnings to allow calculations beyond normal 10M planet populations
- "Colonist / Native tax, happiness, growth & death" section changed to non-blocking warnings to allow calculations beyond normal 10M planet populations
- "Rebel Ground Attack" section changed enhanced with mines / factories / defense calculations
* 2015-Jun-05:
- expanded "Mine Hit Damage" section
* 2015-Feb-13:
- added "Mine Hit Damage" section
* 2013-Aug-16:
- added "Minefield Decay" section
* 2013-May-02:
- added "Ion Storms" section
* 2011-Jun-06:
- "Movement: Next Turn Waypoint" section returned wrong values for right-to-left and/or bottom-to-top movement
- "Movement: Next Turn Waypoint" section now shows whether ship arrived or not, and single-click copy next turn coordinates to starting coordinates
- "Colonist / Native tax, happiness, growth & death" section now allows up to 15 hissing ships
- "Colonist / Native tax, happiness, growth & death" section could show natives paying taxes even if happy < 31
* 2011-May-23:
- "Waypoint Distance & Travel Time" section has been updated and now uses proper turn-by-turn movement code
... many undocumented changes 2006-2011...
* 2006-Aug-01: initial release