refactor: clean cosmos/btcutil to strict minimum (#7)

.github/CODEOWNERS

@@ -0,0 +1,3 @@
+# CODEOWNERS: <https://help.github.com/articles/about-codeowners/>
+
+* @tac0turtle @Julienrbrt

.github/workflows/go.yml

@@ -4,28 +4,15 @@ jobs:
   build:
     name: Go CI
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        go: [1.14, 1.15]
     steps:
       - name: Set up Go
         uses: actions/setup-go@v2
         with:
-          go-version: ${{ matrix.go }}
+          go-version: 1.19
       - name: Check out source
-        uses: actions/checkout@v2
-      - name: Install Linters
-        run: "curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b $(go env GOPATH)/bin v1.31.0"
+        uses: actions/checkout@v3
       - name: Build
-        env:
-          GO111MODULE: "on"
         run: go build ./...
       - name: Test
-        env:
-          GO111MODULE: "on"
         run: |
-          sh ./goclean.sh
-      - name: Send btcutil coverage
-        uses: shogo82148/actions-goveralls@v1
-        with:
-          path-to-profile: profile.cov
+          go test -v ./...

.gitignore

@@ -1,28 +1,28 @@
-# Temp files
-*~
-
-# Log files
-*.log
-
-# Compiled Object files, Static and Dynamic libs (Shared Objects)
-*.o
-*.a
-*.so
-
-# Folders
-_obj
-_test
-
-# Architecture specific extensions/prefixes
-*.[568vq]
-[568vq].out
-
-*.cgo1.go
-*.cgo2.c
-_cgo_defun.c
-_cgo_gotypes.go
-_cgo_export.*
-
-_testmain.go
-
-*.exe 
+# Temp files
+*~
+
+# Log files
+*.log
+
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe 

CHANGELOG.md

@@ -0,0 +1,5 @@
+# Changelog
+
+## [Unreleased]
+
+* Clean-up the repository and its dependencies.

LICENSE

@@ -2,6 +2,7 @@ ISC License
 
 Copyright (c) 2013-2017 The btcsuite developers
 Copyright (c) 2016-2017 The Lightning Network Developers
+Copyright (c) 2022 The Cosmos SDK Developers
 
 Permission to use, copy, modify, and distribute this software for any
 purpose with or without fee is hereby granted, provided that the above

README.md

@@ -1,49 +1,6 @@
-btcutil
-=======
+# cosmos/btcutil
 
-[![Build Status](https://github.com/cosmos/btcutil/workflows/Build%20and%20Test/badge.svg)](https://github.com/cosmos/btcutil/actions)
-[![ISC License](https://img.shields.io/badge/license-ISC-blue.svg)](http://copyfree.org)
-[![GoDoc](https://img.shields.io/badge/godoc-reference-blue.svg)](https://godoc.org/github.com/cosmos/btcutil)
+This repo is a fork of [btcsuite/btcutil](https://github.com/btcsuite/btcutil), limited to the package required by the Cosmos SDK.
 
-Package btcutil provides bitcoin-specific convenience functions and types.
-A comprehensive suite of tests is provided to ensure proper functionality.  See
-`test_coverage.txt` for the gocov coverage report.  Alternatively, if you are
-running a POSIX OS, you can run the `cov_report.sh` script for a real-time
-report.
-
-This package was developed for btcd, an alternative full-node implementation of
-bitcoin which is under active development by Conformal.  Although it was
-primarily written for btcd, this package has intentionally been designed so it
-can be used as a standalone package for any projects needing the functionality
-provided.
-
-## Installation and Updating
-
-```bash
-$ go get -u github.com/cosmos/btcutil
-```
-
-## GPG Verification Key
-
-All official release tags are signed by Conformal so users can ensure the code
-has not been tampered with and is coming from the btcsuite developers.  To
-verify the signature perform the following:
-
-- Download the public key from the Conformal website at
-  https://opensource.conformal.com/GIT-GPG-KEY-conformal.txt
-
-- Import the public key into your GPG keyring:
-  ```bash
-  gpg --import GIT-GPG-KEY-conformal.txt
-  ```
-
-- Verify the release tag with the following command where `TAG_NAME` is a
-  placeholder for the specific tag:
-  ```bash
-  git tag -v TAG_NAME
-  ```
-
-## License
-
-Package btcutil is licensed under the [copyfree](http://copyfree.org) ISC
-License.
+- base58 (unchanged)
+- bech32 (API change in `Decode`)