Update Hero Icons

[leamare]

Can potentially generate the sprite sheet from courier or generate a config that would use a specified CDN as a source instead

[ItsCoolOnMars]

you use HTTP/2 so its not as crucial to generate sprite sheet (I believe?) but still would be useful.

I guess icons of all the objects that have any relevance to the map can be added as well (smokes, dust, an iron branch?)

#2

[leamare]

hmmm maybe yeah, good idea