Modernize repository and project

.flake8

@@ -0,0 +1,2 @@
+[flake8]
+max-line-length = 88

.gitignore

@@ -1,8 +1,6 @@
-*.pyc
-*.pyo
-*.so
-*.coverage
-
-build/
+__pycache__/
+.mypy_cache/
+.pytest_cache/
+.vscode/
 dist/
-sdist/
+env/

CONTRIBUTING.md

@@ -0,0 +1,12 @@
+# Contributing
+To contribute to this repository, use GitHub pull-requests to contribute code
+to this repository.
+
+A few things to pay attention to:
+
+- Dependencies are managed using [poetry](https://python-poetry.org/).
+- Code is formatted using [Black](https://github.com/psf/black) and imports are
+  sorted using [isort](https://pycqa.github.io/isort/).
+- Documentation conforms to the
+  [Google Python Style Guide](https://google.github.io/styleguide/pyguide.html#doc-function-args).
+- Your branch is linear and logical.

LICENSE → LICENSE.md

@@ -1,4 +1,4 @@
-Copyright (c) 2014-2015 Bas Stottelaar
+Copyright (c) 2014-2022 Bas Stottelaar
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -4,7 +4,10 @@ Frame-based streaming protocol for embedded applications.
 [![Build Status](https://travis-ci.org/basilfx/python-tinylink.svg?branch=master)](https://travis-ci.org/basilfx/python-tinylink)
 
 ## Introduction
-This is a general purpose Python module to provide a bi-directional frame-based streaming protocol for low-speed embedded applications, such as serial connected devices. It allowes the receiver to 'jump into' a stream of data frames. Every frame starts with a preamble, so the receiver can synchronize. Any mismatch in checksum will the receiver.
+This is a general purpose Python module to provide a bi-directional frame-based
+streaming protocol for low-speed embedded applications, such as serial
+connected devices. It allowes the receiver to 'jump into' a stream of data
+frames. Every frame starts with a preamble, so the receiver can synchronize.
 
 A payload is optional.
 
@@ -22,28 +25,40 @@ X = Body payload (max. 65536 bytes)
 Y = CRC32 checksum over header + body
 ```
 
-The flags field can have arbitrary values, but the following flags are reserved.
+The flags field can have arbitrary values, but the following flags are
+reserved.
 
 * `0x01 = RESET`
 * `0x02 = ERROR`
 * `0x04 = PRIORITY`
 
-Error correction is not implemented and the bytes are not aligned. The endianness is customizable.
+Error correction is not implemented and the bytes are not aligned. The
+endianness is customizable.
 
 ## State chart diagram
 Below is a simplified statechart diagram of the receiver.
 ![Alt text](docs/statechart.png)
 
 ## Installation
-The latest development version can be installed via `pip install git+https://github.com/basilfx/python-tinylink`.
-
-## Tests
-Tests can be executed with `nosetests`. Check the `tests/` folder for more information.
+The latest development version can be installed via
+`pip install git+https://github.com/basilfx/python-tinylink`.
 
 ## CLI
-A simple serial CLI is included. When installed, run `tinylink /dev/tty.PORT_HERE` to start it. You can use it to send raw bytes via the link and display what comes back.
+A simple serial CLI is included. When installed, run
+`tinylink /dev/tty.PORT_HERE` to start it. You can use it to send raw bytes via
+the link and display what comes back.
+
+The CLI supports so-called modifiers to modify the outgoing data. For example,
+the input `\flags=1 hello world` would send a reset frame with the value
+'hello world'.
 
 PySerial is required to run this CLI.
 
+## Tests
+To run the tests, please clone this repository and run `poetry run pytest`.
+
+## Contributing
+See the [`CONTRIBUTING.md`](CONTRIBUTING.md) file.
+
 ## License
-See the `LICENSE` file (MIT license).
+See the [`LICENSE.md`](LICENSE.md) file (MIT license).