add windchill to captured weather info

[robcee]

wind chill is there. we should save it.

[robcee]

entry will look like:

entry>
<title>Current Conditions: Mostly Cloudy, -8.2°C</title>
<link type="text/html" href="https://www.weather.gc.ca/city/pages/nb-36_metric_e.html"/>
<updated>2021-12-05T12:00:00Z</updated>
<published>2021-12-05T12:00:00Z</published>
<category term="Current Conditions"/>
<summary type="html">
<b>Observed at:</b> Greater Moncton Roméo LeBlanc Int'l Airport 08:00 AM AST Sunday 05 December 2021 <br/> <b>Condition:</b> Mostly Cloudy <br/> <b>Temperature:</b> -8.2&deg;C <br/> <b>Pressure / Tendency:</b> 102.1 kPa rising<br/> <b>Visibility:</b> 19.3 km<br/> <b>Humidity:</b> 86 %<br/> <b>Wind Chill:</b> -12 <br/> <b>Dewpoint:</b> -10.2&deg;C <br/> <b>Wind:</b> SW 8 km/h<br/> <b>Air Quality Health Index:</b> 1 <br/>
</summary>
<id>
tag:weather.gc.ca,2013-04-16:nb-36_cc:20211205120000
</id>
</entry>