title: stringr will not install in R
body: <p>I'm having issues installing <code>stringr</code>. Here's what I get when I request an install of stringr:</p>
  
  <pre><code>utils:::menuInstallPkgs()
  also installing the dependency ‘stringi’
  
  There are binary versions available but the source versions are later:
  
          binary source needs_compilation
  
  stringi  1.1.5  1.1.6              TRUE
  
  stringr  1.2.0  1.3.0             FALSE
  
  Binaries will be installed
  trying URL 'https://ftp.ussg.iu.edu/CRAN/bin/windows/contrib/3.2/stringi_1.1.5.zip'
  
  Content type 'application/zip' length 14220135 bytes (13.6 MB)
  downloaded 13.6 MB
  
  package ‘stringi’ successfully unpacked and MD5 sums checked
  
  The downloaded binary packages are in
      C:\Users\AppData\Local\Temp\3\RtmpsjXf2p\downloaded_packages
  installing the source package ‘stringr’
  
  
  trying URL 'https://ftp.ussg.iu.edu/CRAN/src/contrib/stringr_1.3.0.tar.gz'
  Content type 'application/x-gzip' length 118333 bytes (115 KB)
  downloaded 115 KB
  
  * installing *source* package 'stringr' ...
  ** package 'stringr' successfully unpacked and MD5 sums checked
  ** R
  ** data
  *** moving datasets to lazyload DB
  ** inst
  ** preparing package for lazy loading
  Error in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]) : 
  namespace 'stringi' 1.1.5 is being loaded, but &gt;= 1.1.6 is required
  ERROR: lazy loading failed for package 'stringr'
  * removing 'C:/Users/Documents/R/win-library/3.2/stringr'
  
  Thank you for any help you might provide.  
  </code></pre>