Fortran Csv Module Versions Save

• Version number update in fpm.toml file.

• read and open methods no longer clear all non-default settings.
• CI updates and fixes. Now testing gfortran 9, 10, 11, and 12
• Workarounds for gfortran bugs are now only applied to gfortran <= 10.
• Moved src/tests directory to test to conform to standard FPM layout.
• Readme updates

• Added support for single precision real numbers.

• Some minor efficiency improvements
• Bug fix in get_header routines (see #17). 🐞
• Updates to CI and Readme

Full Changelog

• Added FPM support
• Fixed a small bug in the lowercase function. 🐞
• Added a VSCode workspace file.

• Added the option to append to an existing CSV file.