v1.2.2

• Relaxed python requirements to version 3.7.
• Changed matplotlib (for plotting methods) to an optional dependency.
• Moved to pyproject.toml and updated metadata.

Added the missing function parameter "ext" to read_auto

1.2.1

subversion increment

Improved string column support

Added string columns support for astropy.io.fits backend. String columns are now of fixed width, which has a much wider support in FITSIO implementations.