redo installs for all

.travis.yml

@@ -2,7 +2,6 @@
 
 language: R
 r:
-  - release
   - bioc-devel
 #  - bioc-release
 sudo: false
@@ -15,13 +14,11 @@ addons:
       - libgsl-dev # dependency for gsl>copula>zinbwave
 
 #install: skip
-#before_install:
-#  r_packages:
-#    - knitr
+
 install:
-   - R -e 'install.packages("knitr")'
-#  - R -e 'install.packages("devtools")'
-#  - R -e 'devtools::install(dependencies = TRUE, upgrade_dependencies = TRUE)'
+  - R -e 'install.packages("knitr")'
+  - R -e 'install.packages("devtools")'
+  - R -e 'devtools::install(dependencies = TRUE, upgrade_dependencies = TRUE)'
 
 after_success:
   - Rscript -e 'covr::codecov()'