Update memoffset to 0.9.0

Implemented as part of rust-lang/rust#111839

Author: joshlf

Cargo.toml

@@ -58,7 +58,7 @@ optional = true
 default-features = false
 
 [dependencies]
-memoffset = "0.8"
+memoffset = "0.9.0"
 takeable-option = "0.5"
 backtrace = "0.3.2"
 lazy_static = "1.0"
@@ -81,4 +81,4 @@ raw-window-handle = "0.5"
 glutin-winit = "0.3"
 
 [package.metadata.docs.rs]
-all-features = true
+all-features = true