Update NuGets

Merge d96dafb into c366087

Update Media.Plugin.csproj

Merge pull request jamesmontemagno#792 from klogeaage/fix-png-issues-…

…and-missing-meta-data-from-pickphotos

Made sure PNG is only used when image actually IS a PNG.

Build in CI

Attempt to fix jamesmontemagno#747 and jamesmontemagno#760

Enable iCloud download

Merge branch 'master' of https://github.com/jamesmontemagno/MediaPlugin

Fixes jamesmontemagno#758

Temp work around for iOS 13 as ALAsset no longer gets images. Fixes j…

…amesmontemagno#755