add changelog

CHANGELOG.md

@@ -4,6 +4,20 @@ All notable changes to this project will be documented in this file.
 ## [Unreleased]
 https://github.com/Zokrates/ZoKrates/compare/latest...develop
 
+## [0.7.0] - 2021-04-09
+
+### Release
+- https://github.com/Zokrates/ZoKrates/releases/tag/0.7.0
+
+### Changes
+- Re-export embed functions as stdlib modules, add field to uint casts to stdlib (#801, @dark64)
+- Change left `<<` and right `>>` shifts to take `u32` as a second parameter (#783, @schaeff)
+- Introduce u64 type, add keccak{256,384,512} and sha3{256,384,512} hash functions to stdlib (#772, @dark64)
+- Add negative `-` and positive `+` unary operators, restricting accepted expressions in some places (exponent) to allow for better parsing (#762, @schaeff)
+- Make embed functions generic, enabling unpacking to any width at minimal cost (#754, @schaeff)
+- Add global `--verbose` flag to CLI for verbose logging, add `--ztf` flag to `compile` command, deprecate `--light` flag as its behaviour is now a default. (#751, @dark64)
+- Introduce constant generics for `u32` values. Introduce literal inference (#695, @schaeff)
+
 ## [0.6.4] - 2021-03-19
 ### Release
 - https://github.com/Zokrates/ZoKrates/releases/tag/0.6.4