Merge branch 'master' into UIMA-6264-Switch-from-DocBook-to-Asciidoc

* master: (128 commits)
  [UIMA-6257] Jenkinsfile for uimaFIT
  [UIMA-6257] Jenkinsfile for uimaFIT
  [UIMA-6257] Jenkinsfile for uimaFIT
  [UIMA-6257] Jenkinsfile for uimaFIT
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release uimafit-3.1.0
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release uimafit-3.1.0
  [NO JIRA] Adjust UIMA version in the NOTICE file of the binary distribution
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release uimafit-3.1.0
  [NO JIRA] Update documentation to changed API in ExternalResourceFactory and removed a spurious character
  [NO JIRA] Adjusted comparison version for API change report
  [NO JIRA] Updated README file for release.
  [NO JIRA] Updated README file for release.
  [UIMA-6214] Method signature class in ExternalResourceFactory
  Update an Eclipse metadata file.
  [UIMA-5847] Remove UV3 bug workarounds in FSCollectionFactory
  [UIMA-6216] Upgrade to UIMA Core 3.1.1
  [NO JIRA] Fix NOTICE file
  ...

% Conflicts:
%	pom.xml
%	uimafit-docbook/pom.xml
%	uimafit-docbook/src/docbook/tools.uimafit.configurationparameters.xml
%	uimafit-docbook/src/docbook/tools.uimafit.externalresources.xml
%	uimafit-docbook/src/docbook/tools.uimafit.migration.xml