Add exercise 5-09.
Add C++ Primer exercise 5-10.
Add C++ Primer exercise 5-11.
Add C++ Primer exercise 5-12.
Add Effective STL item 09.
Added two more C++ Primer exercises with TODO's.
Expand iomanip example.
Update comments.
Add bitset example.
Add copy_if example.
Add inheriting constructors example.
Added range-based for example.
Added some tests.