/*handled versioned resources such as 'background-image' present inside css
how to use: increase version whenever the resource content (image content) changes
Note: startup.cs explicit code will request caching for static files requests having '_cache_by_version_' parameter
Other: 
- Why not append a version without cache control: browser will revalidate by issuing 304 which is an extra call even if empty. To avoid that we 'cache' (for 60 days, better value than forever)
- this (parent) css file should be versioned. If not, the old css content is cached, which means the 'background-image' directive with 'old' version will be requested, which version is already cached, so nothing will change.
- this file shoud be declared before the actual css which will be using the below defined vars

*/

:root {
	--fhircast_icon: url('../images/fhircast.png?_cache_by_version_=1');
	--bi_imageSprite0: url('../images/imageSprite0.png?_cache_by_version_=1');
}