Add Windows 64 bit installer for QCTools

[dericed]

32 bit installer is there, but not 64 bit, which is recommended.

[JeromeMartinez]

"is recommended": are you sure? by who? for all cases?

There is still some 32-bit Windows there (Microsoft did not "kill" 32-bit as Apple did for macOS, and there is unfortunately a 32-bit version of Windows 10), so I provide the default installer in 32-bit in order to be compatible with all versions of Windows. Providing several .exe is sometimes a source of confusion for end user who does not know what is 32 and 64-bit, so this is a policy to provide the 64-bit version only in an archive.
And this was not problematic up to now.
I could add a 64-bit installer beside the 32-bit one (remind that we have users who does not know what is the kind of OS version they have, so offering 2 version on the download page may be confusing), and/or a 32/64-bit installer but it would double the size of the .exe.
What would be your preference?

[dericed]

is this resolved?

[JeromeMartinez]

You did not answer the question ;-)
From some external stats, still ~15% of Windows 32-bit.
I suggest an installer with 64-bit version by default with test and download of 32-bit version if on 32-bit version.
(additionally, checking the user agent for 32 or 64 bit arch looks like feasible with browsers on Windows)

will prioritize it, but note that the issue about RAM is resolved (if QCTools need more than 2 GB of RAM, there is a problem elsewhere ;-) ), so this is mostly more for a bit of speed gain.