Cargo.toml: Bump license-exprs to 1.4.0

And then update Cargo.lock with: $ cargo build This bumps us from the SPDX License List 2.4 to 3.1. Some 2.4 identifiers have since been deprecated by SPDX, but none of them have been removed, so it should be safe to deploy this before bumping Cargo and its docs (which mention 2.4 since [1]). [1]: rust-lang/cargo#4898
wking · Jul 10, 2018 · 45217ad · 45217ad
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commit 45217ad
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diff --git a/Cargo.lock b/Cargo.lock
diff --git a/Cargo.toml b/Cargo.toml
@@ -42,7 +42,7 @@ log = "0.3"
 env_logger = "0.5"
 hex = "0.3"
 htmlescape = "0.3.1"
-license-exprs = "^1.3"
+license-exprs = "^1.4"
 dotenv = "0.11.0"
 toml = "0.4"
 diesel = { version = "1.3.0", features = ["postgres", "serde_json", "chrono", "r2d2"] }