thirdparty: vendor cbor2 python library...
thirdparty: vendor cbor2 python library
CBOR stands for Concise Binary Object Representation, which is a data format
which is very compact and extensible.
This patch moves the python library which can serilaize and deserialize python
objects to/from cbor formats. The library is taken from
https://github.com/agronholm/cbor2/ from commit
84181540f6eb650437e3f73cd104a65661fe8e67.
Unrequired files from the cbor library - docs/, tests/, setup.py, setup.cfg,
and tox.ini - have not been vendored.
There is another python library for cbor at
https://github.com/brianolson/cbor_py/ which is used in evolve extension and was
imported in initial version of this series. That library though contains C code
and is bit faster, but has known bugs around serializing nested structures, is
unmaintained, raises an Exception object instead of a more dedicated Error type.
So, it's better to use a bug free and actively maintained library.
This library is not yet used and will be used in later commits.
# no-check-commit because we are importing a third library module
Differential Revision:
https://phab.mercurial-scm.org/D2750
