Restructure Engine v1.6.4

• Packages can now optionally have a "content" folder which will be loaded like an additional mod when the package is selected
• Changed the numbers for "Saturation" and "Brightness" in the Note Color settings to percentages to better reflect how they work
• Added a "noteType" variable to note type scripts and an "eventType" script to event scripts which store the names of the script's note types and event types respectively
• Added "letterSpacing" to FlxText
• Added "FlxEmitterMode" to Hscript
• The Stage Editor will now remember which characters were selected on a specific stage
• In the Chart Editor, hovering over a strum note while "Allow Strumline to be Edited" is enabled will show information on that strumline
• Improved optimization when the "Naughtiness" setting is turned off
• Fixed a bug in the Options menu when holding down a key to rapidly change the value of an option