Set version to 7.0.0 and update MSRV to 1.53

Author: chifflier

README.md

@@ -5,9 +5,9 @@
 [![docs.rs](https://docs.rs/der-parser/badge.svg)](https://docs.rs/der-parser)
 [![crates.io](https://img.shields.io/crates/v/der-parser.svg)](https://crates.io/crates/der-parser)
 [![Download numbers](https://img.shields.io/crates/d/der-parser.svg)](https://crates.io/crates/der-parser)
-[![dependency status](https://deps.rs/crate/der-parser/5.0.0/status.svg)](https://deps.rs/crate/der-parser/5.0.1)
+[![dependency status](https://deps.rs/crate/der-parser/7.0.0/status.svg)](https://deps.rs/crate/der-parser/7.0.0)
 [![Github CI](https://github.com/rusticata/der-parser/workflows/Continuous%20integration/badge.svg)](https://github.com/rusticata/der-parser/actions)
-[![Minimum rustc version](https://img.shields.io/badge/rustc-1.48.0+-lightgray.svg)](#rust-version-requirements)
+[![Minimum rustc version](https://img.shields.io/badge/rustc-1.53.0+-lightgray.svg)](#rust-version-requirements)
 
 # BER/DER Parser
 
@@ -198,7 +198,7 @@ Some parsing tools (for ex for tagged objects) are available in different forms:
 
 ## Rust version requirements
 
-The 6.0 series of `der-parser` requires **Rustc version 1.53 or greater**, based on `asn1-rs`
+The 7.0 series of `der-parser` requires **Rustc version 1.53 or greater**, based on `asn1-rs`
 and `nom` 7 dependencies.
 
 # Serialization

src/lib.rs

@@ -3,9 +3,9 @@
 //! [![docs.rs](https://docs.rs/der-parser/badge.svg)](https://docs.rs/der-parser)
 //! [![crates.io](https://img.shields.io/crates/v/der-parser.svg)](https://crates.io/crates/der-parser)
 //! [![Download numbers](https://img.shields.io/crates/d/der-parser.svg)](https://crates.io/crates/der-parser)
-//! [![dependency status](https://deps.rs/crate/der-parser/5.0.0/status.svg)](https://deps.rs/crate/der-parser/5.0.1)
+//! [![dependency status](https://deps.rs/crate/der-parser/7.0.0/status.svg)](https://deps.rs/crate/der-parser/7.0.0)
 //! [![Github CI](https://github.com/rusticata/der-parser/workflows/Continuous%20integration/badge.svg)](https://github.com/rusticata/der-parser/actions)
-//! [![Minimum rustc version](https://img.shields.io/badge/rustc-1.48.0+-lightgray.svg)](#rust-version-requirements)
+//! [![Minimum rustc version](https://img.shields.io/badge/rustc-1.53.0+-lightgray.svg)](#rust-version-requirements)
 //!
 //! # BER/DER Parser
 //!
@@ -196,7 +196,7 @@
 //!
 //! ## Rust version requirements
 //!
-//! The 6.0 series of `der-parser` requires **Rustc version 1.53 or greater**, based on `asn1-rs`
+//! The 7.0 series of `der-parser` requires **Rustc version 1.53 or greater**, based on `asn1-rs`
 //! and `nom` 7 dependencies.
 //!
 //! # Serialization