Fix benchmark

• pass by reference instead of by value

Disable copy constructors for base structures

• copying is disabled for Order and Limit objects

Test Cases / Documentation

• add some missing test cases
• add some documentation

Bug Fixes

• fix issue where incoming limit orders (that are actually market orders) weren't matching properly with sitting orders

Clear function

• add a clear function that removes all orders from a LimitOrderBook object
  • python binding too

Fix MANIFEST.in

• add vendor code to the manifest

First Release

• C++ and Python ctypes API