[3dem] IHRSR++ and SPIDER 21.02

[Johannes Haataja]

Hi,
	does anyone know where to obtain old versions of SPIDER, namely v.
21.02? The oldest from download page is 21.11. The reason for asking is
that I need and older SPIDER version to test IHRSR++ v. 1.5 tutorial 

http://cryoem.ucsd.edu/wikis/software/start.php?id=ihrsr

to exclude the possibility that the errors I run into (in the final
reconstruction step) have something to do with SPIDER version.

My best,
	- J.