Working the examples in `Programming in Rust` by `OReilly`

Authors: Jim Blandy, et al.

Added some timers to check the differences between the various implementations.

Name		Name	Last commit message	Last commit date
Latest commit History 22 Commits
02_concurrency		02_concurrency
03_types		03_types
04_ownership		04_ownership
05_reference_safety		05_reference_safety
06_error_handling		06_error_handling
09_structs		09_structs
10_enums		10_enums
11_traits		11_traits
12_overloading		12_overloading
13_utility_traits		13_utility_traits
14_closures		14_closures
15_iterators		15_iterators
16_collections		16_collections
18_readwriters		18_readwriters
19_conc_par		19_conc_par
html		html
src		src
.gitignore		.gitignore
Cargo.toml		Cargo.toml
Readme.md		Readme.md