Addon SDK v2; Better video support; Prompt on close & lots more.
Updating the SDK to version 2 will break a lot of plugins.
I see you really want to make Construct3 a choice for teaching schoolchildren, but not real game developers.
The SDK version 2 supports all documented APIs that were in the v1 SDK. It will only break addons if they ignored a warning in our SDK documentation saying not to use undocumented features. The SDK version 2 also uses an industry-standard design also used by all other software and tools in the industry.