binary packages manually specified in the travis configuration file.

.travis.yml

@@ -1,23 +1,57 @@
 # R for travis: see documentation at https://docs.travis-ci.com/user/languages/r
 
-dist: trusty
+language: r
+r:
+ - release
+ - devel
 
-language: R
-sudo: false
+sudo: true
+dist: trusty
 cache: packages
+warnings_are_errors: true
 
 repos:
  CRAN: https://cloud.r-project.org
- ropensci: http:https://packages.ropensci.org
- 
+ ropensci: http:https://packages.ropensci.org 
+
 r_binary_packages:
- - gsl 
+ - Rcpp 
+ - dplyr 
+ - ggplot2 
+ - stringi 
+ - stringr 
+ - KernSmooth 
+ - locpol
+ - lokern 
+ - lpridge
+ - pracma
+ - Matrix
+ - matrixcalc
+ - stats
+ - mvtnorm
+ - DEoptim
+ - GA
+ - GenSA
+ - copulaedas
+ - gridExtra
+ - methods
+ - minpack.lm
+ - pso
+ - shiny
+ - gsl
+ - rhandsontable
+ - shinyalert
+ - grid
+ - GGally
+ - DT
+ - testthat
+ - knitcitations
+ - knitr
 
 r_build_args: "--no-manual --no-resave-data" 
 r_check_args: "--no-build-vignettes --no-manual --timings"
 
 before_install:
  - sudo apt-get install libgsl0ldbl 
- - sudo apt-get install libgsl-dev
  - sudo add-apt-repository -y ppa:texlive-backports/ppa
  - Rscript -e 'update.packages(ask = FALSE)'