diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 49f82a1..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-language: rust
-cache: cargo
-rust:
-  - 1.41.1
-  - stable
-  - beta
-  - nightly
-
-jobs:
-  include:
-    - rust: nightly
-      name: "Test minimal dependency versions with Rust nightly"
-      script: cargo test -Zminimal-versions --verbose --all-features
-    - rust: stable
-      name: "Lint with Clippy"
-      install: rustup component add clippy
-      script:
-        - cargo clippy --verbose --all-targets --no-default-features
-        - cargo clippy --verbose --all-targets --all-features
-
-install: skip
-script:
-  - cargo test --verbose --all-features
-  - cargo test --verbose --no-default-features
diff --git a/Cargo.toml b/Cargo.toml
index 0956bb5..c09e985 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 authors = ["Thomas Bahn <thomas@thomas-bahn.net>", "Torbjørn Birch Moltu <t.b.moltu@lyse.net>", "Simon Sapin <simon.sapin@exyr.org>"]
 description = "ASCII-only equivalents to `char`, `str` and `String`."
 documentation = "https://docs.rs/ascii"
-license = "Apache-2.0 / MIT"
+license = "Apache-2.0 OR MIT"
 name = "ascii"
 readme = "README.md"
 repository = "https://github.com/tomprogrammer/rust-ascii"
diff --git a/src/ascii_str.rs b/src/ascii_str.rs
index 3c4dbf2..e8a6e12 100644
--- a/src/ascii_str.rs
+++ b/src/ascii_str.rs
@@ -139,7 +139,7 @@ impl AsciiStr {
     /// ```
     #[inline]
     #[must_use]
-    pub fn len(&self) -> usize {
+    pub const fn len(&self) -> usize {
         self.slice.len()
     }
 
@@ -155,7 +155,7 @@ impl AsciiStr {
     /// ```
     #[inline]
     #[must_use]
-    pub fn is_empty(&self) -> bool {
+    pub const fn is_empty(&self) -> bool {
         self.len() == 0
     }
 
diff --git a/src/ascii_string.rs b/src/ascii_string.rs
index e85a512..10a88dc 100644
--- a/src/ascii_string.rs
+++ b/src/ascii_string.rs
@@ -497,16 +497,14 @@ impl From<AsciiChar> for AsciiString {
     }
 }
 
-// FIXME? Turn this into a `From` impl
-#[allow(clippy::from_over_into)]
-impl Into<Vec<u8>> for AsciiString {
-    fn into(mut self) -> Vec<u8> {
+impl From<AsciiString> for Vec<u8> {
+    fn from(mut s: AsciiString) -> Vec<u8> {
         // SAFETY: All ascii bytes are valid `u8`, as we are `repr(u8)`.
         // Note: We forget `self` to avoid `self.vec` from being deallocated.
-        let ptr = self.vec.as_mut_ptr().cast::<u8>();
-        let length = self.vec.len();
-        let capacity = self.vec.capacity();
-        mem::forget(self);
+        let ptr = s.vec.as_mut_ptr().cast::<u8>();
+        let length = s.vec.len();
+        let capacity = s.vec.capacity();
+        mem::forget(s);
 
         // SAFETY: We guarantee all invariants due to getting `ptr`, `length`
         //         and `capacity` from a `Vec`. We also guarantee `ptr` is valid
@@ -515,10 +513,9 @@ impl Into<Vec<u8>> for AsciiString {
     }
 }
 
-#[allow(clippy::from_over_into)]
-impl Into<Vec<AsciiChar>> for AsciiString {
-    fn into(self) -> Vec<AsciiChar> {
-        self.vec
+impl From<AsciiString> for Vec<AsciiChar> {
+    fn from(s: AsciiString) -> Vec<AsciiChar> {
+        s.vec
     }
 }
 
@@ -536,13 +533,11 @@ impl<'a> From<&'a [AsciiChar]> for AsciiString {
     }
 }
 
-// FIXME? Turn this into a `From` impl
-#[allow(clippy::from_over_into)]
-impl Into<String> for AsciiString {
+impl From<AsciiString> for String {
     #[inline]
-    fn into(self) -> String {
+    fn from(s: AsciiString) -> String {
         // SAFETY: All ascii bytes are `utf8`.
-        unsafe { String::from_utf8_unchecked(self.into()) }
+        unsafe { String::from_utf8_unchecked(s.into()) }
     }
 }
 
@@ -560,19 +555,17 @@ impl From<AsciiString> for Box<AsciiStr> {
     }
 }
 
-#[allow(clippy::from_over_into)]
-impl Into<Rc<AsciiStr>> for AsciiString {
-    fn into(self) -> Rc<AsciiStr> {
-        let var: Rc<[AsciiChar]> = self.vec.into();
+impl From<AsciiString> for Rc<AsciiStr> {
+    fn from(s: AsciiString) -> Rc<AsciiStr> {
+        let var: Rc<[AsciiChar]> = s.vec.into();
         // SAFETY: AsciiStr is repr(transparent) and thus has the same layout as [AsciiChar]
         unsafe { Rc::from_raw(Rc::into_raw(var) as *const AsciiStr) }
     }
 }
 
-#[allow(clippy::from_over_into)]
-impl Into<Arc<AsciiStr>> for AsciiString {
-    fn into(self) -> Arc<AsciiStr> {
-        let var: Arc<[AsciiChar]> = self.vec.into();
+impl From<AsciiString> for Arc<AsciiStr> {
+    fn from(s: AsciiString) -> Arc<AsciiStr> {
+        let var: Arc<[AsciiChar]> = s.vec.into();
         // SAFETY: AsciiStr is repr(transparent) and thus has the same layout as [AsciiChar]
         unsafe { Arc::from_raw(Arc::into_raw(var) as *const AsciiStr) }
     }