Added aggressive release optimisations

Cargo.toml

@@ -40,3 +40,19 @@ chrono = { version = "*", features = [ "serde" ] }
 base64 = "0.13.0"
 # Reading in configuration files
 figment = { version = "*", features = [ "yaml" ] }
+
+[profile.dev]
+lto = "off"
+incremental = true
+
+[profile.release]
+lto = "fat"
+incremental = true
+codegen-units = 1
+
+# For releases also try to max optimizations for dependencies:
+[profile.release.build-override]
+opt-level = 3
+[profile.release.package."*"]
+opt-level = 3
+