Update CRAN comments and version for next release (#96)

* Update cran-comments.md

* Update scales version to 0.5.0

* Less detail on revdeps in cran comments

* Update CRAN comments

DiagrammeR is fixed, so only one package has an issue now

DESCRIPTION

@@ -1,5 +1,5 @@
 Package: scales
-Version: 0.4.1.9002
+Version: 0.5.0
 Authors@R: c(
     person("Hadley", "Wickham", , "[email protected]", c("aut", "cre")),
     person("RStudio", role = "cph")

NEWS.md

@@ -1,4 +1,4 @@
-# scales 0.4.1.9001
+# scales 0.5.0
 
 * New function `regular_minor_breaks()` calculates minor breaks as a property
   of the transformation (@karawoo).

cran-comments.md

@@ -1,22 +1,15 @@
 ## Test environments
-* local OS X install, R 3.3.1
-* ubuntu 12.04 (on travis-ci), R 3.3.1
-* win-builder (devel and release)
+* local OS X install, R 3.4.1
+* ubuntu 12.04 (on travis-ci), R 3.4.1
+* win-builder (devel)
 
 ## R CMD check results
-0 errors | 0 warnings | 1 notes
-
-* License components with restrictions and base license permitting such:
-  MIT + file LICENSE
+0 errors | 0 warnings | 0 notes
 
 ## Reverse dependencies
 
-This was minor release that only added new features, but I ran revdep checks on the 160 reverse dependencies just to be sure (complete results at  https://github.com/hadley/scales/blob/master/revdep).  I saw no problems related to scales.
-
-However, I:
-
-* Failed to install dependencies for: geneNetBP, mapview, raptr, SeqFeatR, 
-  toaster, userfriendlyscience
-
-* Failed to install: brainGraph, condformat, Deducer, DeducerSpatial, 
-  funModeling, imager, qdap, SEERaBomb, strvalidator
+I ran revdep checks on the 272 reverse dependencies (complete results at
+https://github.com/hadley/scales/blob/master/revdep). There were issues with
+three packages; one of these issues appears unrelated to `scales`, and one has
+since been fixed. The maintainer of the `incidence` package was notified of the
+issue that is related to `scales` changes on 10 August 2017.