buf-list 1.0.2

Added

• A new type Cursor which wraps a BufList or &BufList, and implements Seek, Read and BufRead.
• BufList implements From<T> for any T that can be converted to Bytes. This creates a
  BufList with a single chunk.
• BufList::get_chunk returns the chunk at the provided index.
• New optional features:
  • tokio1: makes Cursor implement tokio's AsyncSeek, AsyncRead and AsyncBufRead
  • futures03: makes Cursor implement futures's AsyncSeek, AsyncRead and AsyncBufRead.