Major update.
Fully optimized FolderTree construction. No room for further optimizations.
Added support of folders bookmarking.
The script now tracks the disks (the tree gets properly updated whenever a removable disk is connected/disconnected).
The core of the script was rewritten so that it now doesn't use any timers at all: thus, the script will now execute probably thousands times less lines compared to the previous version.
Rewriting the core of the script made possible to keep track of processes in a better way, so 'Process Assistant' should be more stable and probably snappier now.
'Process Assistant' was rewritten and now supports 3 different kinds of rules.
The settings.ini file now uses a different name, bound to the script's file name.

[!] Old rules from settings.ini from the previous versions of the script are not supported!
There are some changes (and there probably will be soon more changes) to the settings.ini, so I suggest to remove the old file (or at least remove the 'Process Assistant' rules from the old file.
[!] I haven't yet added all the necessary comments to the code and haven't yet updated the guide to creating Process Assistant rules and haven't yet added the description of the new rule type.