filterbot bugfix and classes

[TheCommCraft]

Note the addition of __init__.py file and the need to put something in them

[TimMcCool]

I'll implement the session string update

[TimMcCool]

Adding init.py files to sub-folders is actually not necessary afaik because everything is imported in the top-level init.py files. I tested it by replacing the files in the site-packages/scratchattach folder and it works.

[TimMcCool]

Ok ig adding the init.py files is necessary because it allows users to import stuff that isn't imported in the top-level init.py file. I'll add them.

[TheCommCraft]

First, there were some bugs in the code that can be fixed this way and secondly, it allows users to create their own filters.

[TheCommCraft]

One of the commits fix a bug that prevents you from adding Spam-Filters or SoftFilters

[TimMcCool]

Oh ok. Fixed the bug that prevented users from adding SpamFilters and SoftFilters by editing the add_filter function. But adding own filters is already possible by creating a class that inherits from HardFilter / SoftFilter and overriding the apply method

[TheCommCraft]

ok