Change MSRV to 1.34 (due to base64 0.11)

.travis.yml

@@ -3,7 +3,7 @@ rust:
 - stable
 - beta
 - nightly
-- 1.32.0
+- 1.34.0
 matrix:
   allow_failures:
   - rust: nightly

README.md

@@ -8,7 +8,7 @@
 
 [![Crate](https://img.shields.io/crates/v/lettre.svg)](https://crates.io/crates/lettre)
 [![Docs](https://docs.rs/lettre/badge.svg)](https://docs.rs/lettre/)
-[![Required Rust version](https://img.shields.io/badge/rustc-1.32-green.svg)]()
+[![Required Rust version](https://img.shields.io/badge/rustc-1.34-green.svg)]()
 [![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](./LICENSE)
 
 [![Gitter](https://badges.gitter.im/lettre/lettre.svg)](https://gitter.im/lettre/lettre?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
@@ -34,7 +34,7 @@ Lettre provides the following features:
 
 ## Example
 
-This library requires Rust 1.32 or newer.
+This library requires Rust 1.34 or newer.
 To use this library, add the following to your `Cargo.toml`:
 
 ```toml

website/src/README.md

@@ -10,7 +10,7 @@ Lettre is an email library that allows creating and sending messages. It provide
 The `lettre_email` crate allows you to compose messages, and the `lettre`
 provide transports to send them.
 
-Lettre requires Rust 1.32 or newer. Add the following to your `Cargo.toml`:
+Lettre requires Rust 1.34 or newer. Add the following to your `Cargo.toml`:
 
 ```toml
 [dependencies]