Version bump to 0.24.10.pre
Use of Ruby 2.1.2 is now recommended
Removed Amendments from sheet PDFs
PDFs now include the word `Page` in front of the `1 of 5` to display as `Page 1 of 5`
PDFs now include the word `Printed on` in front of the date on the bottom center of the PDF
Added UserMailerPreview to repository
Version 0.24.10 finalized