setOpacity on RasterLayers

[Saulzi]

fix for
#908

[jgravois]

thanks for this!

i noticed that the commit here is actually associated with @mrsaulzi, likely because the email address in your git config --global user.email is different than the one associated with github.com/Saulzi.

New commits aren't using the right name
https://help.github.com/articles/setting-your-username-in-git/#new-commits-arent-using-the-right-name

i'm certainly happy to accept as is, but if you want to tidy things up so that Saulzi appears in perpetuity as the 🎪 50th 🎉 esri leaflet contributor, please don't be shy.

(i only mention it because i did exactly the same thing a long time ago)

[Saulzi]

I have deleted the mrsaulzi account and added / set email address on this account. does it now appear correctly?

[jgravois]

does it now appear correctly?

yup. now the commit avatar and pull request avatar are the same. thanks again for this fix!