Bump the version number to 1.0.3.

We'll need a release for Swift 4.1 because of the "near miss" warnings.

Bump version to 1.0.2.

A release will be cut to pick up apple#702.

Fix docs, our tags don't use a leading 'v'.

Update version to 1.0.0

Merge pull request apple#663 from tbkka/swift-4-truncating-init

Change `extendingOrTruncating` to `truncatingIfNeeded`

Merge pull request apple#612 from tbkka/swift-4-linux-compat

Swift 4 linux compat

Set version to 0.9.903

Version = 0.9.902

Version 0.9.901

Merge pull request apple#477 from thomasvl/oneof_cleanup

Oneof cleanup and generation improvements.