composer: Update deps

README: Update links

Update README

Update dependencies

Fix "dbHost" lookup in index.php

Fix "upsert" helper

Update all columns, not just "updated_at"...

Support remote db hosts

Change ECCC endpoint

* From weatheroffice.ec.gc.ca to weather.gc.ca
* Use https

Add unique constraint on current_conditions.site_id

Cache the last "current conditions" per site in DB

Use ORM for CurrentConditions class

Use 'Paris' ORM

Initial commit