py3: use unicode literals in changelog.py
collections.namedtuple type and field names must be str in Python 3.
Our custom module importer was rewriting them to bytes literals,
making this fail.
In addition, __slots__ values must also be unicode.
Mercurial
=========
Mercurial is a fast, easy to use, distributed revision control tool
for software developers.
Basic install:
$ make # see install targets
$ make install # do a system-wide install
$ hg debuginstall # sanity-check setup
$ hg # see help
Running without installing:
$ make local # build for inplace usage
$ ./hg --version # should show the latest version
See https://mercurial-scm.org/ for detailed installation
instructions, platform-specific notes, and Mercurial user information.