Remove depricated oto.NewPlayer for the NewContext api (EngoEngine#720)

update doc for NotResizeable, go.mod for 6/2/2020

Merge pull request EngoEngine#672 from EngoEngine/go-mod-update

update go module

Merge pull request EngoEngine#661 from EngoEngine/go-mod-update

update go mod

Merge pull request EngoEngine#622 from jtuttle/entityscroller-nil-poi…

…nter-safety

skip EntityScroller update loop if target entity is nil

Merge pull request EngoEngine#595 from EngoEngine/laggy-audio

separate oto on its own goroutine

Merge pull request EngoEngine#553 from EngoEngine/update-readme-v1.0

updated readme for v1.0 release