add gitRawCommitsExecOpts parameter for conventional core

the source code of git-raw-commits

There should be 2 parameters rawGitOpts and rawExecOpts.

function gitRawCommits (rawGitOpts, rawExecOpts) {
  var readable = new stream.Readable()
  readable._read = function () {}

  var gitOpts = normalizeGitOpts(rawGitOpts)
  var execOpts = normalizeExecOpts(rawExecOpts)
  var args = getGitArgs(gitOpts)

  if (gitOpts.debug) {
    gitOpts.debug('Your git-log command is:\ngit ' + args.join(' '))
  }

But there is only one parameter here.

https://github.com/conventional-changelog/conventional-changelog/blob/97ad96fe893bd5b40ec52e24fe46f4f9cd357a1a/packages/conventional-changelog-core/index.js#L23-L28

here is an example to set base dir to parse the commit that is what I need

gitRawCommits(gitRawCommitsOpts, { cwd: 'path/to/your/git/project' });

[hutson]

I’ve come to prefer the single object argument as well for most of my work. I can always do object destructuring in the called function if I want to pull out specific properties from the object (typically I do this for readability).

[stevemao]

I like option 1 a lot better. I think a breaking change is fine and it should be easy for users to change accordingly.