v0.5.4

Sunny v0.5.4

Diff since v0.5.3

Closed issues:

• It's impossible to get the suggested magnetic supercell from suggest_magnetic_supercell programmatically (#140)
• Multithreading of sampled correlations (#146)
• Convenience function to initialize spiral order (#164)

Merged pull requests:

• Parallelism examples (#162) (@ddahlbom)