DefaultChangeDetector misses commits which are authored before from Date

[Larusso]

Description

The DefaultChangeDetector will do an initial scan of all commits between two dates. Commits that where authored before the from date but later merged into the branch to be checked will be skipped.

github-changelog-lib/src/main/groovy/com/wooga/github/changelog/DefaultChangeDetector.groovy

Lines 119 to 123 in bd63a46

	Date fromDate = (from) ? from.commitDate : null
	Date toDate = to.commitDate
	if (fromDate && toDate && (fromDate > toDate)) {
	throw new ChangeDetectorException("Commit ${from.SHA1} is newer than ${to.SHA1}")
	}

The desired behavior is to produce the same log as git locally would do.

git log from..to