Since the code repository is publicly available now, manually upgrading from any version to the latest version became quite simple regardless of if you have custom modifications or not.
On the project page:
http://code.google.com/p/etano click on the 'source' tab and then on the 'changes' link (just before the search box). You can see there a list of all changes ever done to the application. Version 1.19 is the one marked with r882, the higher versions are marked as such in the comments.
If you click on the revision number (r***) you will be taken to a page where you can see what's been done in that revision. For example, clicking on r884 will take you to this page
http://code.google.com/p/etano/source/detail?r=884 and see that 6 files were changed. If you click on the small + sign to expand each file, you will see the changes made (colored diff).
Lines that start with + (and green colored) have been added, lines that start with - (and red colored) have been removed. If you have a red line immediately followed by a green line, it means that the line was changed to something else.
Those of you who have custom mods have to pay attention to these changes so to not overwrite the custom work.
If you need help, Maverick to the rescue:
For those that haven't had any custom work done and don't want to edit the files by following the DIFF's, he has taken the files from 1.22 and packaged them up so you can just upload them. They are organized into the appropriate directory folders and includes a "readme.txt" file with instructions, and can be downloaded from
http://www.maverickwebworks.com/updates.html.
For those that have had custom work done, or are unsure, the page above also includes payment instructions for him to manually check and update the files for you.
