Merge namespace and blob packages into shares

[cmwaters]

Summary

After some discussion, it seems apparent that the types Share, Blob and Namespace are inextricably linked. The share package after all is an encoding protocol that converts Blobs into Shares and vice versa.

Proposal

Merge the blob and namespace packages into the share package

For Admin Use

• Not duplicate issue
• Appropriate labels applied
• Appropriate contributors tagged
• Contributor assigned/self-assigned