Removing default extension associations for ".smi" (Real Script) (ticket #3092).
Update zlib to v1.2.8.
Updated Basque translation.
MainFrm: Use the volume step setting for the audio boost increments/decrements.
AppSettings: Change nVolumeStep and nSpeedStep to unsigned.
Page "Formats": a list of extensions in the input field is now synchronized with the general list.
PPageMisc: center-align buttons
CPPageExternalFilters: fix a warning

And assign values to struct members in the order the struct was defined