Add windchill and heatindex

[mwittig]

windchill temperature - according to https://de.wikipedia.org/wiki/Windchill

WCT = 13.12 + 0.6215 * Tref - 11.37 * v^0.16 + 0.3965 * Tref v^0.16

• WCT – windchill temperature n celsius
• Tref – air temperature in celsius
• v – wind speec in km per hour

heat index - https://de.wikipedia.org/wiki/Hitzeindex
HI = c_1 + c_2 * T + c_3 * phi + c_4 * T * phi + c_5 * T^2 + c_6 * phi^2 + c_7 T^2 *phi + c_8 * T * phi^2 + c_9 * T^2 * phi^2

• Tref – air temperature in celsius
• phi – relative humidity in %

[flybysun]

Seems to be possible, I'll implement it the next days. As it gives more numbers then the dew point, maybe a different name for the plugin would be better in this case? Would existing installations be referenced automaticly to the new name for updates?

[flybysun]

Hi, I already implemented the windchill. would be nice if you could do some testing as well. I'll implement the heatindex and then we can merge the testing version into the main.
Regards