File License Headers

[mmahsereci]

Suggestion

Each .py file under src/probnum in a new PR must have a license header of the following form:

__copyright__ = "Copyright (c) ProbNum Authors."
__license__ =  "MIT License"

or

# Copyright (c) ProbNum Authors
# MIT License

Advantage

This is useful since individual files potentially get shared, changed and re-used elsewhere.

To Do

• [ ] Determine which style of the above should be preferred
• [ ] Include this information in the styleguide.md

This closes the issue. Afterward only PRs with license headers in .py files will be accepted.