Release 1.8.0 (#5421)

* npm i and CHANGELOG update for 1.8.0 release

* v1.8.0-rc.0

* Manual build commit for 1.8.0-rc.0

* v1.8.0

* Build for 1.8.0

Author: jdevcs

CHANGELOG.md

@@ -583,16 +583,13 @@ Released with 1.0.0-beta.37 code base.
 ### Security
 -  Updated `got` lib version and fixed other libs using npm audit fix (#5178) (#5254)
 
-## [Unreleased]
-
-## [1.7.6]
+## [1.8.0]
 
 ### Changed
 -  Updated `sha3` and `sha3Raw` type definition to accept `Buffer`
 -  Removing legacy field in lerna.json (#5403)
 -  Correct `eth_sendSignedTransaction` code example (#5402)
 
-
 ### Fixed
 -  Browser builds support polyfills (#5031) (#5053) (#4659) (#4767)
 -  Update node version on actions to fix breaking mosaic test (#5354) 
@@ -602,4 +599,8 @@ Released with 1.0.0-beta.37 code base.
 
 ### Added
 -  Add missing function type "receive" in `AbiType` (#5165)
--  Support of `safe` and `finalized` block tags added (#5410)
+-  Support of `safe` and `finalized` block tags added (#5410)
+
+## [Unreleased]
+
+## [1.8.1]