v2.0.0 - CDL v2.0

CDL v2.0 - Major Release

New Features

• Amorphous materials: amorphous[subtype]:{shapes} syntax for non-crystalline materials (opal, obsidian, pearl, etc.)
• Nested growth: > operator for overgrowth/phantom relationships (right-associative)
• Aggregates: ~ operator for crystal clusters, druse linings, parallel growth (6 arrangement types)
• Group-level twins: | twin(law) on individual form groups within expressions
• Feature definitions: Edge case handling for @feat = [feature:value] definitions

New Models

• AmorphousDescription - for non-crystalline materials
• NestedGrowth - overgrowth relationships
• AggregateSpec - crystal aggregate arrangements

New Constants

• AMORPHOUS_SUBTYPES: opalescent, glassy, waxy, resinous, cryptocrystalline
• AMORPHOUS_SHAPES: massive, botryoidal, reniform, stalactitic, mammillary, nodular, conchoidal
• AGGREGATE_ARRANGEMENTS: parallel, random, radial, epitaxial, druse, cluster
• AGGREGATE_ORIENTATIONS: aligned, random, planar, spherical

Breaking Changes

• parse_cdl() now returns CrystalDescription | AmorphousDescription (union type)
• FormNode type expanded: CrystalForm | FormGroup | NestedGrowth | AggregateSpec
• FormGroup gains optional twin: TwinSpec | None field

Tests

• 239 tests (was 163, +76 new)