6.5 Fixes

[Adalyia]

• Replaced GetWindow calls with a GetWindowByName function in WordsmithUI.cs (Inefficient but easiest just to get things working with the change to WindowSystem)
• CommandManager -> ICommandManager
• DataManager -> IDataManager
• PluginLog -> IPluginLog

[LadyDefile]

Hey! Thanks for putting in the effort to try to get Wordsmith updated. First, I want to apologize. I've been busy and focused on other things and hadn't gotten around to it sooner. Second, I want to say thanks for pushing this request. It kind of snapped me out of my complacency. I guess seeing your dedication to keeping Wordsmith running made me kick my rear into gear, so to speak. It felt pretty cool having someone push a pull request, like I built something that people really want to keep around. Third, you'll be happy to know I updated everything necessary and optimized a few things along the way so this PR isn't necessary on the code side. But again, thank you. You pushing this is what spurred me to get Wordsmith up and running for the new update.