update prep_release script

Allow package check to pass with NOTEs, just not ERROR or WARNING
entries.  Also automatically insert the current version in NEWS.md for
any line matching "# chiimp dev".

.utils/prep_release.sh

@@ -4,16 +4,17 @@ set -e
 
 VERSION=$1
 
-chiimp_check='x<-devtools::check();quit(save="no",status=length(c(x$errors,x$warnings,x$notes)))'
+chiimp_check='x<-devtools::check();quit(save="no",status=length(c(x$errors,x$warnings)))'
 
 # Update version in download link in README
 VER_MSG="The most recent released version is"
 TAG_URL="https\\://github.com/ShawHahnLab/chiimp/releases/tag"
 SED_README="s:$VER_MSG \\[[0-9.]+\\]\\($TAG_URL/[0-9.]+\\)\\.:$VER_MSG [$VERSION]($TAG_URL/$VERSION).:"
 sed -i -r "$SED_README" README.md
 
-# Update version in DESCRIPTION
+# Update version in DESCRIPTION and NEWS.md
 sed -i "s/Version: .*$/Version: $VERSION/" DESCRIPTION
+sed -i "s/# chiimp dev/# chiimp $VERSION/" NEWS.md
 
 R --slave --vanilla -e "$chiimp_check"
 R --slave --vanilla -e "rmarkdown::render('GUIDE.Rmd', output_file = 'GUIDE.pdf', quiet = TRUE)"
@@ -24,3 +25,8 @@ pushd ..
 zip -r chiimp-v${VERISON}.zip chiimp/*
 tar czvf chiimp-v${VERSION}.tgz chiimp/*
 popd
+
+# TODO show reminder of checks before tagging a release:
+# * full test on all three platforms
+# * make sure NEWS.md contains all updates under a heading matching this version
+# * make sure GUIDE.Rmd is up-to-date and the rendered GUIDE.pdf is correct