Fitsio

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Changes

- raise new fitsio.FITSFormatError exception when we detect format
errors in a FITS file. Currently this only raises when extensions
are not properly marked with XTENSION but we can expand this over time

Bug Fixes

- Bug not writing compression qlevel when it is set to None/0.0
This was preventing lossless gzip compression
- work around cfitsio bug when creating HDU for lossless gzip compression,
reopen file instead of just an update hdu list

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Changes

- move to cfitsio 4

Bug Fixes

- Fixed issue where the patched C fitsio headers were not
first in the include path.
- Added extra header guards and headers to help with compilation issues.
- Fixed builds of the bundled cfitsio code to hide symbols and directly
include the *.o files when linking.

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Changes

Bug Fixes

- Fix errors on 32 bit builds where default numpy integer
types were 32 rather than 64 bit assumed by the C code.
- Fix checks for rows being sent to C codes

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Changes

- Row subsets of table data are returned in the order sent by the user
rather than sorted and unique. E.g. rows = [2, 2, 1] will return
data corresponding to that order of rows, including duplicates.
- Removed deprecated `pkg_resources` from tests (M. Becker).
- converted tests to use pytest
- Improved doc strings (N. Tessore)

Bug Fixes
- Bug updating header string cards was adding new key rather than updating
- Bug gzip compression when not using quantization

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Bug Fixes
- Bug in repr of FITS where it only worked the first time it was generated

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Bug Fixes

- Bug converting extension names, should just ensure ascii rather than
subset of ascii
- Bugs in the repr of headers where history keywords had extra spaces.
Also a bug with not upper casing things like 1.0E20 which is the
fits standard