chore: remove 1.18 support (#70)

.github/workflows/test.yml

@@ -18,7 +18,6 @@ jobs:
           - macos-latest
           - windows-latest
         go-version:
-          - 1.18.x # Minimmum version
           - 1.21.x # Current version
           - 1.22.x # Latest version
 

readme.md

@@ -5,10 +5,10 @@ is not familiar with EIP-4844, you can think of this library as a KZG library
 where the polynomial degree is set to 4095 and opening proofs are computed on
 polynomials in lagrange form (4096 evaluations at 4096'th roots of unity).
 
-## Installation 
+## Installation
 
 ```
-$ go get github.com/crate-crypto/go-kzg-4844
+go get github.com/crate-crypto/go-kzg-4844
 ```
 
 ## Example
@@ -21,30 +21,28 @@ this library.
 To run the benchmarks, execute the following command:
 
 ```
-$ go test -bench=.
+go test -bench=.
 ```
 
 ## Consensus specs
 
 This version of the code is conformant with the consensus-specs as of the
 following commit: `017a8495f7671f5fff2075a9bfc9238c1a0982f8`
 
-
 ## Security
 
-- For security bugs in this library, email [email protected].
+- For security bugs in this library, email <[email protected]>.
 - This library uses
   [gnark-crypto](https://github.com/ConsenSys/gnark-crypto/tree/master) for
   elliptic curve operations. An audit of gnark can be seen
   [here](https://github.com/ConsenSys/gnark-crypto/blob/master/audit_oct2022.pdf).
-  This library uses a more recent version than the audited version, since that 
+  This library uses a more recent version than the audited version, since that
   version had a serialization bug.
   We only rely on gnark-crypto's underlying group operations and pairing code
   for bls12-381. For code that we do need to use, that has not been audited, we
   have copied it into this library so that it can be a part of this libraries
   audit. We have noted in the comments which functions we have done this for.
 
-
 ### Panics
 
 Panics can be a DoS vector when running code in a node. This library endeavors
@@ -55,7 +53,7 @@ to only panic on startup; only methods which are called when we create the
 
 Because we use generics, the minimum golang version needs to be 1.18 or above. Since Golang only back ports security fixes to the latest version and one version behind latest, this library will at most be one version behind latest.
 
-Tests are ran against the 1.18, the current version and the latest version. If support for 1.18 is broken, we will update the CI to reflect this with a given reason.
+Tests are ran against the current version and the latest version.
 
 ## License