I apologize for the delay.  The M_strings and M_time packages are available. The rest are forthcoming.

I'll look into getting those added as well.

There are some handy packages that I use via fpm that I'd love to see in the SF package manager. 

Please feel free to let me know that I should just use fpm and install myself in the SF default include directory if it's a lot of trouble.

M_calculator
M_strings
M_time
M_io
M_sort

among others that are found here:

https://github.com/urbanjost?tab=repositories

These are the ones I need for my current project:

M_io = { git = "https://github.com/urbanjost/M_io.git" }
M_time = { git = "https://github.com/urbanjost/M_time.git" }
M_strings = { git = "https://github.com/urbanjost/M_strings.git" ,tag="v1.0.1"}

Thanks,
Bryan