prepare for publish sub crate scopetime

scopetime/Cargo.toml

@@ -3,6 +3,9 @@ name = "scopetime"
 version = "0.1.0"
 authors = ["Stephan Dilly <dilly.stephan@gmail.com>"]
 edition = "2018"
+description = "log runtime of arbitrary scope"
+homepage = "https://gitui.org"
+license = "MIT"
 
 [dependencies]
 log = "0.4"

scopetime/README.md

@@ -0,0 +1,16 @@
+# scopetime
+
+*log runtime of arbitrary scope*
+
+This crate is part of the [gitui](http://gitui.org) project and can be used to annotate arbitrary scopes to `trace` their execution times via `log`:
+
+```rust
+fn foo(){
+    scope_time!("foo");
+}
+```
+
+the resulting log looks someting like this:
+```
+19:45:00 [TRACE] (7) scopetime: [scopetime/src/lib.rs:34] scopetime: 2 ms [my_crate::foo] @my_crate/src/bar.rs:5
+```

scopetime/src/lib.rs

@@ -1,3 +1,4 @@
+#[deny(unsafe_code)]
 use log::trace;
 use std::time::Instant;