Merge branch 'release/0.9.5' into develop
Fix for infinite loop in content()
Do not save environmental variables system.base_url_absolute & system.base_url_relative
Fix cached configuration (part 2)
fixed hostname for config overrides
Move base_url variables from configuration into grav container
Fix for relative URLs in markdown on installs with no base_url
Upped the default compression from 80 to 85
PSR formatting fixes
support uppercase image extensions
force media array sorts to use natural sort ordering
added filename/thumb/extension to medium properties
updated version and changelog
Merge branch 'release/0.9.6'