Link to the correct coverage link
We now have a secure fsockopen implementation

We are technically the first library to do so, since WordPress' support is based
on ours.
Rework the Why Requests documentation

This is a little less attack-y, and instead speaks more to our merits. In
addition, it adds points on common libraries in use today.
Ensure the CA root data is included via PEAR
Update the changelog for 1.6