Merge pull request #36 from tacaswell/rel/125_versions

Rel/126 versions

REL: v1.2.5

Added Python 3.10+ support.
Added the BSD-3-Clause license file.
Fixed the manually entered version in `setup.py`.

REL: v1.2.4

Add support for Python 3.10+

REL: 1.2.3

Merge pull request #32 from tacaswell/fix_delitem_bug

FIX: commit the query to delete keys

REL: v1.2.1

Tagging v1.2.0

- Make historydict python 2 compatible
- Actually test historydict on travis for python 2.7, 3.4, 3.5 and nightly
- Remove six as a dependency
- Make historydict testing windows compatible

v1.1.0

- Add flush() method; sync any mutable contents to disk on command and on exit.

First stable release:

- renamed from history.History to historydict.HistoryDict
- supports full MutableMapping API + `past` method
- tested on Python 2.7, 3.3, 3.4, 3.5

Apparently this is the v0.0.1 tag