Type alias ShapeParameters

Describes a shape, to be displayed alongside an atomic structure. kind is a string that defines what shape should be displayed. parameters contains three levels of specification: global applies to all structures and/or all atomic environments; structure is a list that defines parameters that are specific of each structure in the dataset - there should be one set of parameters per structure; atom is a list that defines environment-specific shapers - there should be one set of parameter for each environment defined in the dataset.