v1.1.0 - update to segments

This update we've introduced dynamism to segments to improve how they are generated. This is explained in more detail here
In terms of endpoint changes, main changes to take note are

• POST /segment - remove use of includeAll body field. Instead to create segment of entire subscriber pool just omit the rules field
• GET /segment/subscribers - endpoint now accepts also segmentBucketId. If thats provided, it will add the subscribers to that specific bucket. If segmentId is provided, it will add the subscribers to all the segments buckets
• GET /segments - endpoint now accepts param includeBuckets to determine whether to also return the segments buckets
• GET /subscribers - endpoint no longer accepts segmentId param