Fix object conversions

• Removes the capability to convert between different types of objects.
• Allows to clone Device, Entity, Source and Destination because they are just object references which lifetime is managed by CoreMIDI.
• Introduces the type AnyObject that can encapsulate different types of objects as needed by the Notifications

BREAKING CHANGES:

• The Notifications structs change from using ObjectType/Object to using AnyObject.
• Several From conversions are removed.

Adding support for the MIDI 2.0 protocol

This release adds support for the MIDI 2.0 protocol and cleans up some other things:

• Added EventList and EventBuffer support.
• Added input_port_with_protocol and virtual_destination_with_protocol to Client.
• input_port_with_protocol creates a InputPortWithContext<T> that allows to define a context to every source that is connected through connect_source.
• OutputPort::send and VirtualSource::received can work with both PacketList and EventList.
• Using blocks for callbacks from Client.
• Client notifications allowed by reference or ownership.
• Simplified the PacketList and PacketBuffer implementations.
• Added set_property and get_property to Object.
• Conversions between Source, Destination, VirtualSource, VirtualDestination, Device, Entity and Object.
• Updated all the examples and documentation to use EventList.

Refactoring && CI migration to GitHub Actions && PacketBuffer improvements

• Rust compiler upgraded to 1.51.0
• Rust edition upgraded to 2018
• Upgrade coremidi-sys, core-foundation and core-foundation-sys
• Moved structs and impls together
• PacketBuffer uses MIDIPacketListInit and MIDIPacketListAdd
• Applied cargo fmt
• Several Clippy fixes
• Migrated CI to Github Actions
• Breaks retro-compatibility for notification events
  • IOErrorInfo renamed to IoErrorInfo
  • Notification::IOError renamed to Notification::IoError

Fixed bugs around Client Notifications and Core Framework

0.5.0

Documented How to Receive Client Notifications (#28)

Implement Send for BoxedCallback

0.4.0

implement Send for BoxedCallback (#15)

Allow empty PacketBuffer and initial capacity

0.3.1

Allow empty PacketBuffer and initial capacity