Merge branch 'master' into kgrinberg/master

.github/CODEOWNERS

@@ -1 +1,2 @@
-* @heroku/languages
+* @heroku/languages
+* @heroku/buildpack-maintainers

CHANGELOG.md

@@ -2,10 +2,15 @@
 
 # Master
 
+- Doc: Update Readme with version numbers
+- update Code Owners to include the Heroku Buildpack Maintainers team
+- Clean up build log output
+
 - Add failcase for cache busting
 - Bugfix: Clearing pip dependencies
 - Correct ftp to https in vendored file
 - Warn for Django 1.11 approaching EOL, provide link to roadmap [fixed detection]
+- Update Python versions in README to match docs
 
 --------------------------------------------------------------------------------
 

README.md

@@ -61,8 +61,9 @@ Specify a Python Runtime
 
 Supported runtime options include:
 
-- `python-3.7.4`
-- `python-3.6.9`
+- `python-3.8.2`
+- `python-3.7.6`
+- `python-3.6.10`
 - `python-2.7.17`
 
 ## Tests

bin/steps/python

@@ -110,7 +110,7 @@ if [[ ! -f "$CACHE_DIR/.heroku/requirements.txt" ]]; then
   fi
 else
   # IF there IS a cached directory, check for differences with the new one
-  if ! diff "$BUILD_DIR/requirements.txt" "$CACHE_DIR/.heroku/requirements.txt"; then
+  if ! diff "$BUILD_DIR/requirements.txt" "$CACHE_DIR/.heroku/requirements.txt" &> /dev/null; then
     puts-step "Clearing cached dependencies"
     # if there are any differences, clear the Python cache
     # Installing Python over again does not take noticably more time