2019-01-06 meld 3.20.0
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Fixes:
* Add Enter as a Compare accelerator in folder comparisons (Kai Willadsen)
* Change entry and drag-n-drop file changes to confirm discarding modified
files instead of offering to save, for simplicity (Kai Willadsen)
* Fix menu sensitivity in folder comparisons (Kai Willadsen)
* Avoid dconf writes of no-op window size allocations (Kai Willadsen)
* Issues fixed: 247, 262
Translations:
* Emin Tufan Çetin (tr)
* Milo Casagrande (it)
* Rafael Fontenelle (pt_BR)