RSL1a, RSL1b

[ghost]

Resolves #283

• Added tests RSL1a and RSL1b for both REST and Realtime clients
• Ensure RSL1l, RSL1l1
• Ensure RSL1h
• Ensure RSL1k1, RSL1k2
• Refactored publish() method in REST client
• Refactored publish() method in Realtime client
• Added build_messages() in conversations.rb and converting name, data, attributes to Ably::Models::Message

# Publish a single message with (name, data) form (1)
channel.publish 'click', { x: 1, y: 2 }
      
# Publish a single message with single Hash form (2)
message = { name: 'click', data: { x: 1, y: 2 } }
channel.publish message
      
# Publish an array of message Hashes form (3)
messages = [
  { name: 'click', data: { x: 1, y: 2 } },
  { name: 'click', data: { x: 2, y: 3 } }
]
channel.publish messages
      
# Publish an array of Ably::Models::Message objects form (4)
messages = [
  Ably::Models::Message(name: 'click', data: { x: 1, y: 2 })
  Ably::Models::Message(name: 'click', data: { x: 2, y: 3 })
]
channel.publish messages
      
# Publish a single Ably::Models::Message object form (5)
message = Ably::Models::Message(name: 'click', data: { x: 1, y: 2 })
channel.publish message
      

[owenpearson]

The code changes look good to me. Just needs a couple of small changes to inline documentation.

[owenpearson]

LGTM, thanks 👍