cargo: explicitly define default feature

chronicle/Cargo.toml

@@ -46,5 +46,6 @@ lazy_static = "1.4.0"
 surf = { version = "2.3.2", default-features = false, features = [ "h1-client-rustls" ] }
 
 [features]
+default = []
 testnet = [ "tc-subxt/testnet" ]
 development = [ "tc-subxt/development" ]

tester/Cargo.toml

@@ -33,5 +33,6 @@ tc-subxt = { path = "../tc-subxt"}
 time-primitives = { path = "../primitives" }
 
 [features]
+default = []
 testnet = [ "tc-subxt/testnet" ]
 development = [ "tc-subxt/development" ]