[macOS] Update default dependencies

tasks/brewfiles/default

@@ -38,6 +38,7 @@ brew 'reattach-to-user-namespace'
 brew 'rust'
 brew 'sbt'
 brew 'scala'
+brew 'stack'
 brew 'sqlite'
 brew 'the_silver_searcher'
 brew 'thrift'
@@ -56,11 +57,14 @@ cask 'google-hangouts'
 cask 'gpgtools'
 cask 'iterm2'
 cask 'java'
-cask 'karabiner'
+cask 'karabiner-elements'
 cask 'macpass'
+cask 'mactex'
 cask 'mirrordisplays'
 cask 'osxfuse'
+cask 'steam'
 cask 'slate'
+cask 'sling'
 cask 'sparkleshare'
 cask 'spotify'
 cask 'synergy'