fix: pass config to parserOpts and writerOpts

[bertho-zero]

No description provided.

[coveralls]

Coverage remained the same at 92.714% when pulling 3bf3486 on bertho-zero:patch-2 into 7a21713 on conventional-changelog:master.

[bcoe]

@bertho-zero what's broken without this, we only get the default configuration I imagine?

Could I bother you to add a test?

[MunifTanjim]

what's broken without this, we only get the default configuration I imagine?

Yes, without this, it's not possible to use custom configuration. I'm using this change in my project (https://github.com/Synor/synor/blob/71ddc337/patches/conventional-changelog-conventionalcommits%2B4.2.3.dev.patch) and can confirm that it works perfectly.

[acostalima]

Hi @bcoe,
When would it be possible to get this merged? We're having issues with lerna when using conventionalcommits preset.

CC @satazor