Pre-release of OpenMC version 0.5.4

OpenMC Users and Developers,

The OpenMC development team is proud to announce the availability of version 0.5.4 for testing before it is officially released. This release includes various new features and bug fixes added over the past four months.

The pre-release can be found at https://github.com/mit-crpg/openmc/releases and the most up-to-date version of the release as we fix small issues can be accessed by checking out the release-v0.5.4 branch at https://github.com/mit-crpg/openmc/tree/release-v0.5.4. We would like all developers and users to do some testing over the next week with this source code. Please report any problems or comments to our issue tracker at https://github.com/mit-crpg/openmc/issues.

Best regards,

Bryan