fix(core): ignore version commits with leading whitespace

Author: marionebl

@commitlint/core/src/library/is-ignored.js

@@ -4,7 +4,7 @@ const WILDCARDS = [
 	c => c.match(/^(Merge pull request)|(Merge (.*?) into (.*?)|(Merge branch (.*?))$)/),
 	c => c.match(/^(R|r)evert (.*)/),
 	c => c.match(/^(fixup|squash)!/),
-	c => semver.valid(c)
+	c => semver.valid(c.trim())
 ];
 
 export default function isIgnored(commit = '') {

@commitlint/core/src/library/is-ignored.test.js

@@ -39,6 +39,8 @@ test('should return true for npm version commits', t => {
 	t.true(isIgnored(`0.0.1-some-crazy-tag.0`));
 	t.true(isIgnored(`0.0.1-some-crazy-tag.999`));
 	t.true(isIgnored(`0.0.1-1e69d54`));
+	t.true(isIgnored(`v0.0.1`));
+	t.true(isIgnored(` v3.0.0`));
 });
 
 test('should return true fixup commits', t => {