Dependencies cleanup

Cargo.toml

@@ -25,25 +25,29 @@ path = "src/lib.rs"
 [[bin]]
 name = "db-test"
 path = "src/main.rs"
+required-features = ["bin"]
+
+[features]
+bin = ["measure_time", "pretty_env_logger"]
 
 [dependencies]
 ironsea_index = "^0.1"
 ironsea_index_sfc_dbc = "^0.1"
 ironsea_index_hashmap = "^0.1"
 
-memmap = "^0.7"
-lazy_static = "^1.3"
 arrayref = "^0.3" # For Positions Objects
+lazy_static = "^1.3"
+memmap = "^0.7"
 
 serde = "^1.0"
 serde_derive = "^1.0"
 serde_json = "^1.0"
 bincode = "^1.1"
 
-# Used for main.rs as integration test
-measure_time = "^0.6" # To mesure parsing time, only required by binary
-
 # Logging macros API
 #log = { version = "^0.4", features = ["max_level_trace", "release_max_level_info"] }
 log = { version = "^0.4", features = ["max_level_trace", "release_max_level_trace"] }
-pretty_env_logger = "^0.3"       # Logger implementation
+
+# Used for main.rs as integration test
+pretty_env_logger = { version = "^0.3", optional = true }       # Logger implementation
+measure_time = { version = "^0.6", optional = true }  # To mesure parsing time, only required by binary