The new code block layout made it difficult to select and copy code without including the line number

[ppoffice]

Before the new layout:
I can select code and code only by hand or using clipboard.js

After the new layout:
Line number is also selected as each number is within the same line as the code

Related code:
https://github.com/hexojs/hexo-util/blob/master/lib/highlight.js#L45-L55

[SukkaW]

Related issue: hexojs/hexo#3884 hexojs/hexo#3913 401dde1#r36250206

@curbengh @stevenjoezhang @jiangtj

Since it is a serious Breaking Change that already breaks a lot of theme. I suggest to revert the PR #132 and release an emergency release of hexo-util & hexo.

[SukkaW]

@hexojs/core
Since the prismjs is already on the roadmap, IMHO we shouldn't bring any changes to current highlightjs since it will be deprecated soon.

[curbengh]

#153