v0.3.0

What's Changed

• Better error msg on service host not found by @brollb in #53
• Fix typos by @brollb in #54
• Allow caps in usernames by @brollb in #52
• Block friend requests between group members. Close #20 by @brollb in #55
• bump version to 0.3.0 by @brollb in #56

Full Changelog: 0.2.0...0.3.0