Merge branch 'hotfix/3.8.1'
Merge branch 'release/3.9.0'
Merge remote-tracking branch 'upstream/master' into develop
CTL-479 Make IDataErrorInfo/IDataWarningInfo methods customizable in ModelBase
Merge pull request #24 from DanielKuehner/develop

CTL-479  Make IDataErrorInfo/IDataWarningInfo methods customizable in ModelBase
(*) CTL-479 Make IDataErrorInfo/IDataWarningInfo methods customizable in ModelBase
Minor improvements for CTL-479
Removed GitHubLink and GitVersion (now located on build agents)
Adding NextVersion.txt for GitVersion
(*) CTL-481 Share lock for ServiceLocator / TypeFactory / DependencyResolver to prevent memory leaks