consider inlining links

[mikeblas]

Many links seem to be awkwardly worded or raw URLs. Like this one from the "Considering Threadability" section:

For more information see the following article from Herb Sutter: http://herbsutter.com/2013/05/24/gotw-6a-const-correctness-part-1-3/
Instead, how about something more readable?

For more information see [Const Correctness, Part 1](http://herbsutter.com/2013/05/24/gotw-6a-const-correctness-part-1-3/) by Herb Sutter.