Consolidated Changes 

Make address field sequence change depending on the shop country.
Highlight documentation on how to correct security errors. 
Make the default status for payment methods and shipping methods inactive when they are installed.
Some general clarification/grammar of the install.sql.
Change "Define Language" to "Edit Screen Text" to make it more obvious to non-techie users what it does.
Move the help text to top of the screen so it is more in your face.