v0.4.0

This release expands on the async support by offering full support for async writing of parquet files via the futures::AsyncWrite.
Furthermore, in this release we remove the need of Seek to writing, which some writers do not support. Finally, this release adds a small guide to help users.

Full Changelog

Breaking changes:

• Make write_* return the number of written bytes. #45
• move HybridRleDecoder from read::levels to encoding::hybrid_rle #41
• Simplified split of page buffer #37 (jorgecarleitao)
• Simplified API to get page iterator #36 (jorgecarleitao)

New features:

• Added support to write to async writers. #35 (jorgecarleitao)

Fixed bugs:

• Fixed edge case of a small bitpacked. #43 (jorgecarleitao)
• Fixed error in decoding RLE-hybrid. #40 (jorgecarleitao)

Enhancements:

• Removed requirement of "Seek" on write. #44 (jorgecarleitao)

Documentation updates:

• Added guide to read #38 (jorgecarleitao)

Testing updates:

• Made tests deserializer use the correct decoder. #46 (jorgecarleitao)