Add example of estimating pi using Monte Carlo simulation to std::rand
Remove the dist function; it is more efficient to compare squared distances
Guide: array subscript notation
Guide: ownership
Cargo begins version number at 0.0.1 instead of 0.1.0
Cargo generates "Hello, world!" instead of "Hello world!"
`input_num` is used is used instead of `guess` further in the guide
Use new Cargo file syntax
Use new Cargo starting version number
Remove repeated section and make file path generic
Fix error message for WindowsPath::new

Originally discovered here: http://www.reddit.com/r/rust/comments/2dbg3j/hm_unwrap_is_being_renamed_to_assert/cjnxiax
auto merge of #16443 : steveklabnik/rust/fix_path_docs, r=kballard

Originally discovered here: http://www.reddit.com/r/rust/comments/2dbg3j/hm_unwrap_is_being_renamed_to_assert/cjnxiax
auto merge of #16447 : steveklabnik/rust/guide_vectors_extra, r=brson

Can't believe I forgot this!
auto merge of #16471 : EduardoBautista/rust/chapter-14-fixes, r=steveklabnik

Just some small fixes for the guide.  The cargo stuff is probably because of an update.
Surround formula in a 'notrust' code block
Use unicode pi symbol in pi estimation example. Additional tweaks
auto merge of #16362 : nham/rust/std_rand_pi_example, r=huonw

Pros:
I like this example because it's concise without being trivial. The Monty Hall example code is somewhat lengthy and possibly inaccessible to those unfamiliar with probability.

Cons:
The Monty Hall example already exists. Do we need another example? Also, this is probably inaccessible to people who don't know basic geometry.
auto merge of #16487 : steveklabnik/rust/guide_ownership, r=brson

Whew. This section was so important, I saved it for last.

/cc @wycats, @nikomatsakis