Adjustments for latest STM32 data

[eduardosm]

New data in LibrePCB/stm-db#7

There are breaking changes.

For example, in STM32F100V[CDE]Tx two "IO" pins became "MonoIO", which means different symbol with different UUID.

Before:

After:

[ubruhin]

There are breaking changes.

That is not an option. We have to be 100% sure there are no breaking changes.

For example, in STM32F100V[CDE]Tx two "IO" pins became "MonoIO", which means different symbol with different UUID.

To me, the new symbol looks better, but the old one would also be fine to keep, to avoid messing up existing schematics. So both options would be fine for me. But in any way, the change has to be non-breaking.

Possible options:

• (Manually) edit the UUID cache to make sure new pins keep the old UUID
• Manual "hacks" in the generator to patch specific parts to restore their old properties, avoiding new UUIDs
• Blacklist existing library elements which would break, keeping the old files as-is (not nice, but may be OK especially for legacy parts)
• Other ideas?

I think in the end, it also depends on how many library elements are affected by breaking changes. For just a few parts, a manual, hacky way could be fine.