Updated license workflow to use github CDN for license mappings
add new developer
fixing minor bugs in HTML code: &deg --> &deg;
Exclude properties files from license header workflow
fix problem with 52north sos implementation: optional kvp parameter 'serviceVersion' is not supported but 'AcceptVersions'
set sourceEncoding to UTF-8
Remove leading 'I' from interfaces
switch to SNAPSHOT versions and increase to 0.3

We don't want to have bug fix versions x.y.z while still being a development version (0.x)
Minor attribute refactoring c -> check
Fixes 52North/Supervisor#33