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We’re very pleased to announce the release of devtools 1.2. This version continues to make working with packages easier by increasing installation speed (skipping the build step unless local = FALSE), enhancing vignette handling (to support the non-Sweave vignettes available in R 3.0.0), and providing better default compiler flags for C and C++ code.

Also new in this release is the sha argument to source_url and source_gist. If provided, this checks that the file you download is what your expected, and is an important safety feature when running scripts over the web.

Devtools 1.2 contains many other bug fixes and minor improvements; to see them all, please read the NEWS file on github.