1.1.25

• Updated to use PlantUML library version 1.2021.3 (see changes).
• Added new extension point that supports generating several alternative diagrams for the same content (issue #109) and delays the computation of the diagram so it can run on a non-UI thread (issue #82). Uses of old extension point should still work, but should be updated to use new one.
• I needed to remove (for now) the feature that recomputes saved diagram images during builds, when their source have changed.
• Experimental PlantUML SVG view that handles zooming better (issue #116)
• Association is generated when type is Optional and for methods with a specific signature. (thanks to dpolivaev)
• Changes generated diagrams to use name : type UML format for attributes instead of java style type name (issue #115)
• Source features (issue #104)