Housekeeping focused on future proofing:

• Build pipeline updates:
  • Added Python 3.11
  • Python 2.7, 3.4, and 3.5 no longer tested, but this doesn't affect the status of support by smbus2 code. It only disables the unsupported configuration in the GitHub workflow.
• Update deprecated Sphinx config format.
• Refactored unit tests.

Contributors: @markmentovai, @hramrach

• Explicitly export from top level of package #69.
• Transitioned pipelines from Travis-CI to GitHub Actions.
• Python 3.10 support added.

No functional changes - minor updates only

• Test file added to distro package
• Published smbus2 on sonarcloud.io

Changes

• Support for SMBus PEC (Packet Error Checking).
• Support for Python 3 type hinting and mypy static type analysis. Type stubs added to the project.
• Cleaner docs:
  • Removed redundant README.rst.
  • README.md, CHANGELOG.md and LICENSE added to dist package.

Cleanup - discarded code

As of this version the SMBusWrapper class is removed and must be replaced with SMBus:

New/added features

• SMBus.init(), SMBus.open(): bus can be a file path as well (issue #17).
• The folllowing SMBus commands added (last two normally not supported by pure i2c-devices):
  • process_call,
  • write_block_data,
  • read_block_data,
  • block_process_call.
• Enter/exit handlers moved to SMBus class.

• Expose enumerations of i2c functionality flags in the I2cFunc class and exported that.
• Added convenience features making the i2c_msg class easier to work with.

Deprecation warning

• The SMBusWrapper class is now considered deprecated. Please update your code to use SMBus instead.

Fixed #32: Incorrect i2c_msg write object created in Python 3.x from string if ascii characters >= 128.

Added an "smbus compatible" method write_quick(addr) to the SMBus class (issue #7).

• Force single r/w option (PR #20).
• Documentation updates (PR #16 and #14).
  • Docs available on readthedocs thanks to @thijstriemstra