Gammu1.28.92 has been just released. This release makes Gammu honor freedesktop.org standards for config file location, though this change is optional and old locations still work. There have been also other minor bug fixes under the hood, especially for Nokia phones.
Full list of changes:
New SMSD config option HardResetFrequency.
Gammu now supports freedesktop.org/XDG specs for config file locations and reads ~/.config/gammu/config.
Gammu and Wammu for Windows start to really lack behind their other OS variants. If you are able to help, please contact us on mailing list or privately.
This has been already announced almost year ago, but the situation is still getting worse for Windows builds. This is especially true for Wammu, where bug#1086 has hit quite a lot of users and we're unable to do something about that right now.