Add and fix some lints

src/buffer.rs

@@ -195,7 +195,7 @@ impl StackFrame {
             .drawable_area
             .and_then(|(da_pos, da_size)| Self::intersect_areas(da_pos, da_size, pos, size));
 
-        StackFrame {
+        Self {
             pos,
             size,
             drawable_area,

src/lib.rs

@@ -1,3 +1,14 @@
+#![forbid(unsafe_code)]
+// Rustc lint groups
+#![warn(future_incompatible)]
+#![warn(rust_2018_idioms)]
+#![warn(unused)]
+// Rustc lints
+#![warn(noop_method_call)]
+#![warn(single_use_lifetimes)]
+// Clippy lints
+#![warn(clippy::use_self)]
+
 mod buffer;
 pub mod frame;
 pub mod styled;

src/styled.rs

@@ -34,7 +34,7 @@ impl Styled {
         self.then(text, ContentStyle::default())
     }
 
-    pub fn and_then(mut self, mut other: Styled) -> Self {
+    pub fn and_then(mut self, mut other: Self) -> Self {
         let delta = self.text.len();
         for (_, until) in &mut other.styles {
             *until += delta;