This package contains an ordered set implementation in Cython. Features:
- Works like a regular set, but remembers insertion order;
- Is approximately 5 times faster than the pure Python implementation
overall (and 5 times slower than set);
- Compatible with Python 2.6 through 3.6.;
- Supports the full set interface;
- Supports some list methods, like index and __getitem__.
- Supports set methods against iterables.
