New cloud command (developed on Windows, not yet tested on other systems)

This is a groundbreaking innovation.
It essentially performs backups and uploads them to an SFTP server in an "intelligent" way.
It also supports an external program/script to send logs via email, with full privacy support (removing |STAT| lines containing file names).
The best way to get started is:

zpaqfranz h cloud

Once thoroughly tested on non-Windows systems, a comprehensive guide will be published on the GitHub wiki.

Sets error level and exits if seterrorlevelX is passed via command line

New mkdir verb for SFTP

New checkpassword command to test password validity

Heuristic search for libcurl library (dylib) on Macintosh

Displays various commands to install libcurl if it cannot be found

Fallback if SFTP SSH key file is missing but a password is provided

testbackup now supports filenames in the format _????????.zpaq

Fixed file extraction in TUI, removing ":" from filenames

Improved versum output

New -comment switch for pause to customize the prompt

Shortened reminder about using double quotes

Improved detection of output redirection

No longer hangs when -silent is used and a password is requested

Various output improvements

Replaced advanced C++ constructs for better compatibility

New verbs for work

devart-red, devart-green, devart-yellow, devart-cyan print colored text

getsize reports the size of one or more files