1.4.0

- Change internal trie representation thanks to that performance
  of common operation is 1.5 - 2.5 times faster. Details are
  presented in WojciechMula#107
  Warning: this change breaks compatibility of pickle and save()
  format, this won't be possible to load files created in the
  previous version.

1.3.0

- Issue WojciechMula#102: add alternative pickling mechanism which requires
  less memory than the standard pickle solution

1.2.0

- Closes WojciechMula#79 --- add remove_word/pop methods that remove a word from trie
- Some minor fixes

1.1.13

- Closes WojciechMula#50
- Fixes two possible errors.

This release fixes a long-standing bug WojciechMula#50, which prevented users
from pickling/unpickling huge automatons, having several gigabytes.

The fix wouldn't be possible without great help and patience of
all people involved in issue WojciechMula#50:
* Emil Stenström (@EmilStenstrom)
* David Woakes (@woakesd)
* @Dobatymo
* Philippe Ombredanne (@pombredanne)

The fix wouldn't also be possible without Daniel Lemire (@lemire),
who gave me access to decent machines and I was able to test fixes
on large data.

A positive side effect is review, test and partially rewrite the
pickling mechanism.

1.1.12

- Allow to search over sequence of numbers

1.1.11

- The unpickling code was reworked and tested.
- Valgrind and other tools helped in fixing some
  latent bugs.
- Fixed WojciechMula#68
- Closed WojciechMula#62

1.1.0

version 1.1.9