Merge pull request #1771 from sharkdp/warn_when_missing_contexts

Warn when building assets from files if some referenced contexts are missing

Cargo.toml

@@ -60,7 +60,7 @@ optional = true
 default-features = false
 
 [dependencies.syntect]
-version = "4.5.0"
+version = "4.6.0"
 default-features = false
 features = ["parsing", "yaml-load", "dump-load", "dump-create"]