MRBS 1.7.4 release

[Files at https://p.sf.net/mrbs/mrbs174]

This is a bugfix release of MRBS.

Changes since MRBS 1.7.3:

• Bug fixes for:
• iCalendar exports
• PHP 7.4 compatibility
• Plus a number of other bug fixes/improvements.

See NEWS or ChangeLog in the release for more details.

Enjoy!

John Beranek