0.3 to 0.4

• removed fcstd and stl base geometries
• lifted restriction of collection id forbidding gui, common and template
• added class name element and class standard element
• reworked names and standard system in class elements
• naming element renamed to substitution element, changed template requirements and removed substitute field
• lifted restriction of parameter names forbidding standard and name
• added restrictions on characters usable for Table Index
• added syntax to group non-standardized parts together

0.2 to 0.3

• added common field to the Parameter element
• added "name" as a forbidden parameter name
• moved collection information from header directly into the element
• explicit collection id
• factored databases out of what was backends
• removed specifications of backends
• moved infos about drawings into a separate database
• added SolidWorks database
• added syntax to specify connectors for OpenSCAD
• added description field to Parameter element
• added table2 2 dimensional lookup tables
• make types mandatory
• distinguish between dimension and connector drawings
• added Angle type

0.1 to 0.2

More or less a complete rewrite