Integration of TOPPRA in HPP

This package was kick-started from the TOPPRA plugin in hpp-core.

Instruction for developers

Unit tests

At the moment, there is no CI pipeline so developpers should make sure the unit test passes before submitting a PR.

Increase the version number

Inreasing the version number is done with bump2version. Run bump2version (major|minor|patch) depending on the version number you wish to increase.