New prop for submods with multiple authors + fixes

[Booplicate]

Some submods have more than one person working on it. I saw a workaround, and I don't like it. This adds a new prop for Submod objects - coauthors. Assuming it's a list/tuple of strings. We show those on the submods screen near authors.

• I also added __repr__ to the Submod class.
• This also fixes compareVersionLists to work for any cases.
• Added a new log (and a new method) for submods - submod_log.txt. For that I have to move some things in definitions (such as writelog) to init -995. This won't affect the places where we're already using those. It also makes sense to have logging stuff defined earlier.
• We now have a new function wtf, which is an alias to writelog. Because why not I guess.

Testing:

• verify that co-authors are shown on the screen, and the screen still looks good
• verify nothing breaks if no co-authors were provided
• verify that __repr__ for submods has all we need
• verify that compareVersionLists works properly for any version lists
• verify the new submod log works fine