v0.9.0

What's Changed

• Provides safe YAML serialization by @craabreu in #59
• Adds includeHydrogens option in ResidueCoordination by @craabreu in #60
• Fixes issue with multiple custom functions by @craabreu in #61
• Defines periods of periodic collective variables by @craabreu in #62
• Adds collective variable for measuring path progress/deviation in CV space by @craabreu in #63
• Adds contrast-group option to AttractionStrength by @craabreu in #64
• Disregards contrast-group attraction when computing reference value by @craabreu in #65

Full Changelog: v0.8.0...v0.9.0