[Python] Compatibility with pyarrow 0.17.0

Release 0.3.5

Bump version for release

Version 0.4.0

Version 0.3.1 bug fix release

- gcc 4.4 support in R
- C++ file overwrite issue failing to truncate file first
- Categorical and datetime missing data issues in Python

Version 0.3.0

- Fix Windows large file (> 2 GB) issues
- Fix unaligned memory accesses, undefined C++ behavior
- R garbage collection bugs, factor NA handling
- Add columns parameter to Python read_dataframe function

Version 0.2.0. Bug fixes, category dtype interoperability with R

Bug fix version 0.1.2

Fix various bugs from the 0.1.0 release

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