Blast 1.7.4 fixes important bugs

Important bug fixes in this version. Everyone is encouraged to update. It was also submitted to the Mac App Store, so will be there within a week, most probably.

Release notes:

• Fixed: sometimes the file that was shown as selected was not the one that was operated upon.
• Save recent files list every minute for better persistence in case of abnormal exit from the application.
• Fixed: the excluded items list was sometimes not persisted between launches.

Update from within Blast, or download from Blast download page.