Read character improvement, install and build type defaults

• Read character automatically trims to c_null_char if present, making it cleaner / easier to read character values
• better default install directory when using FetchContent
• build type default release

Better FindHDF5 and compiler options

v1.4.3

cmake max 3.22

more robust across platforms

• action= rw, w, r, r+, a for clarity

FindHDF5 more robust

BUGFIX: default dim names start with variable name

this avoids stomping of dims by dissimilar shaped variables when dim names are not specified.

remove open(status=) parameter, use action instead

The h%open(..., status=) parameter is DEPRECATED and is ignored. Its functionality was duplicated by the h%open(..., action=) parameter.

As before:

• h%open(...) defaults to action='rw', which opens or creates a file.
• action='w' erases an existing file if present.
• action='r+' or action='r' errors if file doesn't exist

FindHDF5 optim, note cmake >= 3.20 needed for autobuild

• Note with error message that CMake >= 3.20 needed for autobuild of NetCDF (let us know if this is an issue, we could go back to CMake 3.15, with less reliability)
• add intel compiler optimization flags
• don't override CMAKE_INSTALL_PREFIX for nc4fortran used via CMake FetchContent

add auto-close destructor

using best principles of object-oriented programming, add a auto-closing file destructor, such that when netcdf_file leaves procedure scope, the file data is flushed and the file is closed.

correct error message when compilers ABI-compatible

v1.2.6

correct ABI check error message

install robustness

CMake >= 3.14 required for general robustness

install, preset improvments

also avoid externalproject constant rebuilds