Update changelog
Add some different measure units in demo products
Update changelog
Add YamlReader in ImportExportBundle
Fix products demo data
Update the product transformer and related processor to deal with
heterogeneous data as with json file
Update product demo data set and configure the product processor used in
installer to handle heterogeneous product data
Merge branch 'master' of github.com:akeneo/pim-community-dev
Remove Yaml reader