Revert "CopyMethod" since it's not ready

Revert "ci: Allow triggering Go workflow manually"
This reverts commit f530620.
Revert "refactor: Split common code out of CopyBytes"
This reverts commit b4dd789.
Revert "feat: Add FileCopyMethod option / API"
This reverts commit 9205813.

Merge pull request #123 from otiai10/feature/concurrent-dcopy

Feature/concurrent dcopy

Merge pull request #108 from otiai10/develop

Support embed.FS (fs.FS)

Merge pull request #101 from michalpristas/feat/onerr

Let caller hander error cases

Merge pull request #103 from ncopa/rm-while-copy

fix files/symlinks/dirs deleted while copy

Merge pull request #92 from otiai10/breaking-change/skip-with-fileinfo

[Breaking Change] Skip now accepts FileInfo

Merge pull request #84 from otiai10/feature/fix-78

Skip device files by default: Use opt.Specials

Update README

Merge pull request #61 from otiai10/feature/bufsize

Merge pull request #54 from otiai10/fix/preservetimes

Do not preserve times when Untouchable