Merge pull request #811 from mhines-usgs/AQCU-1644

AQCU-1644: update mran snapshot date and travis R version

.travis.yml

@@ -1,5 +1,5 @@
 language: r
-r: 3.3.2
+r: 3.4.1
 sudo: required
 warnings_are_errors: false
 
@@ -12,10 +12,10 @@ install:
 
   #Install First Set of Dependencies
   - Rscript -e 'install.packages("crayon")'
-  - Rscript -e 'install.packages(c("bitops","Rcpp","digest","magrittr","stringi","stringr","yaml","evaluate","formatr","highr","R6","assertthat","lazyeval","DBI","jsonlite","brew","mime","curl","caTools","openssl","memoise","whisker","rstudioapi","git2r","withr","markdown","knitr","htmltools", "rmarkdown","RCurl","htmlTable","roxygen2","dplyr","lubridate", "readr", "base64enc", "whisker"), repos="https://mran.microsoft.com/snapshot/2017-02-08", type="source")'
+  - Rscript -e 'install.packages(c("bitops","Rcpp","digest","magrittr","stringi","stringr","yaml","evaluate","formatR","highr","R6","assertthat","lazyeval","DBI","jsonlite","brew","mime","curl","caTools","openssl","memoise","whisker","rstudioapi","git2r","withr","markdown","knitr","htmltools", "rmarkdown","RCurl","htmlTable","roxygen2","dplyr","lubridate", "readr", "base64enc", "whisker"), repos="https://mran.microsoft.com/snapshot/2018-08-09", type="source")'
 
   #Install a different version of HTTR
-  - Rscript -e 'install.packages("httr", repos = "https://mran.microsoft.com/snapshot/2016-01-27",type="source")'
+  - Rscript -e 'install.packages("httr", repos = "https://mran.microsoft.com/snapshot/2018-08-09",type="source")'
 
   #Install latest versions of devtools and testthat
   - Rscript -e 'install.packages(c("devtools", "testthat"))'

inst/extdata/installPackages.R

@@ -90,7 +90,7 @@ if (nchar(lib) == 0) {
 pkgs <- repgenImports(lib.loc = lib)
 
 # all packages are held back to older, MRAN versions
-installPackages(c(pkgs, "devtools"), lib, "https://mran.microsoft.com/snapshot/2017-02-08")
+installPackages(c(pkgs, "devtools"), lib, "https://mran.microsoft.com/snapshot/2018-08-09")
 
 # reference all date/time points to UTC (which is not actually a time zone)
 Sys.setenv(TZ = "UTC")