Version 2.4.0 released

[mairas]

Hi there,

I just released SensESP 2.4.0. This is mostly a bugfix release, with a tiny new feature baked in:

• Fix the unbalanced namespace brackets when debugging is disabled by @mairas in Fix the unbalanced namespace brackets when debugging is disabled #581
• Announce only activated services on mDNS by @mairas in Announce only activated services on mDNS #582
• Allow setting of custom WiFiManager access point SSIDs by @mairas in Allow setting of custom WiFiManager access point SSIDs #583
• Release 2.4.0 by @mairas in Release 2.4.0 #584

Have fun!