Version 0.2.0

What's Changed

This release provides various minor enhancements as well as the following new features and significant changes:

• Support for inter-communicators for communication between processes of different process groups.
• Support for info objects (key-value pairs to pass additional hints to various functions).
• Use Sphinx and Breathe for documentation.
• Revised api for various request-related functions (test... and wait...).
• Support std::span if C++20 or newer is used.
• Support dynamic process creation.

Full Changelog: v0.1...v0.2.0