Merge tag 'v3.41.0' into develop

Added string support to dynamic messages to fix #193 v3.41.0

# gpg: Signature made Wed May 29 22:33:15 2019 CEST
# gpg:                using RSA key 149325FD15904E9C4EB89E95E81444E9CE1F695D
# gpg: Good signature from "Rick van Hattem <wolph@wol.ph>" [ultimate]
# gpg:                 aka "[jpeg image of size 9662]" [ultimate]

Author: wolph