Merge branch 'hotfix/0.4.2' into develop
Add HTTP headers support including encodings and content types.
Add tests for server-side UHR.
Close connection after every HTTP request in server-side UHR.
Add default UHR headers to client-side UHR.
Fix example application due UHR changes.
Update UHR docs.
Merge branch 'feature/#19-uhr-headers' into develop
Add UHR parameter for unsafe HTTPS.
Fix bug with wrong request parameters.
Merge branch 'feature/#18-uhr-https-cert' into develop
Update versions to 0.4.3.
Merge branch 'release/0.4.3'