Log Message:
(www/R-httpuv) Updated 1.6.5 to 1.6.9

# httpuv 1.6.9

* Fixed #354: The incorrect method was called to clear a `vector`. (#355)

* The `src/Makevars` file no longer sets `CXX_STD=CXX11`, and the
  `DESCRIPTION` file no longer lists `SystemRequirements: C++11`,
  because newer R versions always support C++11. (#356, #357)

# httpuv 1.6.8

* Fixed #351: A race condition could cause httpuv to crash when
  starting the background thread for I/O. (#352)

# httpuv 1.6.7

* Fixed rstudio/shiny#3741: The `TZ` environment variable could get
  unset in some cases. (#346)

* Closed #302: Fixed potential thread-safety issues with `timegm2`
  implementation. (#346)

# httpuv 1.6.6

* Update docs for CRAN (#343)

* Updated to libuv 1.43.0. (#328)

* Fixed #336: `encodeURI()` and `encodeURIComponent()` printed a space
  instead of a leading zero, as in `"% A"` instead of \ 
`"%0A"`. (#337)