Oceanraft release v0.1.0-alpha

[rv64m]

• 80% test coverage for current implementations #2
• More stable implementation
  • Better apply actor implementation #5
  • Refactor apply mode: use trait callback #6
  • Get and maintain the applied index and invariant #9
  • Process group deleted, we need remove pending proposals #11
  • Improve incorporte and fanout heartbeat #13
  • Refactor global variable for multiraft actor #15
  • Improve api integrity of oceanraft #17
  • IMPROVE: oceanraft multiraft api #18
  • Improve implementation of handle_multiraft_messages #19
  • Refactor the membership changes process #21
  • Support generic response type for write and membership #23
  • Independent group management message from admin message #24
  • Add more fields and methods for config #25
  • Merge write and membership channel into same one #30
  • Refactor error #31
  • Refactor ticker trait by support default trait #33
  • Implementation the read_index #34
  • Improve api to add timeout #35
  • Cleaner transport #39
  • Refactor actor #44
  • Use easy api to refactor the user-facing write/read/membership interface  #45
  • Expose core state within the group #47
  • Remove core #48
  • Support rocksdb as storage #49
  • Refactor propose for write using generic type and trait bound #50
• More user-friendly implementation
  • Use easy api to refactor the user-facing write/read/membership interface  #45
• Basic performance benchmark
• Better api
• Provides the rocksdb storage implementation
• Better docs