Merge pull request #7259 from Flaburgan/bump-ruby-2.4

Bump ruby to 2.4

.ruby-version

-2.3
+2.4

.travis.yml

 language: ruby
 
 rvm:
+  - 2.4.1
   - 2.3.4
-  - 2.1.10
 
 env:
   - DB=postgresql BUILD_TYPE=cucumber
@@ -29,7 +29,7 @@ before_install:
   - tar -xvf $PWD/travis-phantomjs/phantomjs-2.1.1-linux-x86_64.tar.bz2 -C $PWD/travis-phantomjs
   - export PATH=$PWD/travis-phantomjs/phantomjs-2.1.1-linux-x86_64/bin:$PATH
 
-bundler_args: "--deployment --without development production --with mysql postgresql --jobs 3 --retry 3"
+bundler_args: "--deployment --without development --with mysql postgresql --jobs 3 --retry 3"
 
 script: "./script/ci/build.sh"
 

Changelog.md

 # 0.7.0.0
 
+## Supported Ruby versions
+
+This release recommends using Ruby 2.4, while retaining Ruby 2.3 as an officially supported version.
+Ruby 2.1 is no longer officially supported.
+
 ## Refactor
 
 * Make the mention syntax more flexible [#7305](https://github.com/diaspora/diaspora/pull/7305)
@@ -11,6 +16,7 @@
 * Remove deprecated statistics.json [#7399](https://github.com/diaspora/diaspora/pull/7399)
 * Always link comment count text on mobile [#7483](https://github.com/diaspora/diaspora/pull/7483)
 * Switch to new federation protocol [#7436](https://github.com/diaspora/diaspora/pull/7436)
+* Send public profiles publicly [#7501](https://github.com/diaspora/diaspora/pull/7501)
 
 ## Bug fixes