Don't throw an error if version doesn't start with `v´

[leo]

IMHO, there's no reason to strictly throw an error here. Instead of doing that, we should just log the suggestion and let things like Travis CI simply pass on with other tasks.

For example: At HyperTerm we're not using the "v" (because there's simply no point in using it), but we would still like to use the "GitHub publisher" feature... 😊

[develar]

Problem is that we search version by v-prefixed tag name — https://github.com/electron-userland/electron-builder/blob/master/src/publish/gitHubPublisher.ts#L53

Solution — use both variants to find and log warn instead of throwing error.

[leo]

@develar That sounds like a great way to handle it!

[leo]

@develar Is this a big change? Probably not, right? Is there are chance that you could fix this and release a patch? We're going to release a big thing and would like to use this feature for it.

[develar]

@leo Sorry, I missed your last message. Fixed.

build.publish.vPrefixedTagName can be set to false to create tag name without v prefix. Regardless of this option, v is not required anymore, both variants are checked.

[leo]

@develar Cool, thanks! 👍 😊