PCB Visualizer update
- Added check for support of HTML5 Canvas. If not supported, an error message is given.
- Improved reporting of loading progress to avoid the feeling of hanging while loading.
- Improved error reporting in case something goes wrong while loading and initializing.
- The measured drill class is calculated and reported.
- The measured pattern class is calculated and reported.
- Problems occurred with some copper colors based on the selected finish. The copper layers in the buildup are now shown in copper color.
- Visualizer could not load data for IMS pool boards. Solved.
- Correct core color for IMS pool.
- Correct drill layer display in buildup image when no bottom layers.
