Merge branch 'v6.1-dev' into v6.1-dev

Author: StuartWheater

azure-pipelines.yml

@@ -131,6 +131,7 @@ jobs:
       sudo apt-get install -qq libxml2-dev libcurl4-openssl-dev libssl-dev libgsl-dev r-base -y
       sudo R -q -e "install.packages(c('devtools','metafor','fields','covr'), dependencies=TRUE, repos='https://cloud.r-project.org')"              
       sudo R -q -e "install.packages(c('DSI','DSOpal','DSLite'), dependencies=TRUE, repos='https://cloud.r-project.org')"
+
       sudo R -q -e "install.packages(c('DescTools','e1071'), dependencies=TRUE, repos='https://cloud.r-project.org')"
 
       # XML grep for coverage report merging