Introduction: phrasing of advantages of Boost

**Which documentation does this apply to?**
User's Guide

```
Some Boost libraries can be referenced from Python.
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What does this mean? Is it referring to Boost.Python? Are there Python bindings for other Boost libraries that I'm not aware of?

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Boost libraries are peer reviewed, well designed, and extensively tested.
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I think this should be the first bullet point.

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Of lower priority is readability and compile times.
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I'd be scared as a user to read this.