Initial commit

Library/Sources/Internal/Environment+Properties.swift

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+import Hummingbird
+
+extension Environment {
+    
+    // MARK: Computed
+    
+    public var logLevel: String? {
+        self.get("LOG_LEVEL")
+    }
+    
+}

Library/Sources/Internal/LoggerLevel+Conformances.swift

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+import ArgumentParser
+import Logging
+
+/// Extend `Logger.Level` so it can be used as an argument
+#if hasFeature(RetroactiveAttribute)
+extension Logger.Level: @retroactive ExpressibleByArgument {}
+#else
+extension Logger.Level: ExpressibleByArgument {}
+#endif