Caches Versions Save

Fixed:

• unused parameter warnings (#28)
• MSVC warning flags for tests setup (0f65db1d3013a406115f3200fa7d3429e599a69d)

Added:

• HashMap as a template parameter to allow custom implementation usage (#26)

Fixed:

• Incorrect FIFO policy erasure in the case of Remove() call (f834cf1224de671285e67caf262ea935a98b084c)

Add:

• TryGet() method that allows cache's element access without exception rising in the case of missing
• documentation output for the library

Minor clean ups of fixed_sized_cache class:

• remove necessity of Policy key type specification
• update Clear() to use STL for_each function

Initial caches library release