Avoid pulling in clap crate by the library (#140)

`names` has made questionable decision to depend on `clap` by the
default which brings unnecessary dependencies for the library users:
https://github.com/fnichol/names/blob/b5023b03e2339bf6e860bdcef20557ab81f3ec55/Cargo.toml#L21

Author: mati865

Cargo.lock

@@ -54,7 +54,7 @@ path = "examples/internal/rbspy-connect.rs"
 [dependencies]
 thiserror ="1.0"
 log = "0.4"
-names = "0.14.0"
+names = { version = "0.14.0", default-features = false }
 reqwest = { version = "0.11", features = ["blocking"], default-features = false }
 url = "2.2.2"
 libflate = "1.2.0"