No wifiduino board in package_esp8266com_index.json

[JavaCS3]

I saw #4590 this PR is merged but not wifiduino board on package_esp8266com_index.json

[d-a-v]

This was pushed after 2.4.1 release.
You'll have to wait for core v2.4.2, or use the git version. Documentation tells you how to get it.

[JavaCS3]

@d-a-v when is the next release?

[devyte]

2.4.2 is currently planned for August.