Mnemosyne 2.7 released

[Peter Bienstman]

https://mnemosyne-proj.org/download-mnemosyne.php

Mnemosyne 2.7: 2019-11-19

- Added Google text-to-speech and translate. To enable, first associate a
  language to a card type using "Cards - Manage card types...". You can then
  right-click on a text field when adding or editing cards to insert a
  translation or a sound file.
- Mnemosyne is now a 64-bit application only, and the Windows version is
  bundled with Python 3.7, PyQt 5.13.1, matplotlib 3.1.1.
- Use system language as default language (code by Adam Papai).
- Only warn once per day about the number of cards you learned, even if you
  open and close Mnemosyne inbetween (code by Adam Papai).
- More error checking when uploading science logs. To avoid missing files from
  the past, Mnemosyne will reupload all of your old logs as well.
- Disallow starting a headless sync server in case no password is set up (patch
  by Marcin Mielniczuk).
- Reenable right-click menu on review widget to allow for copying text.
- Fix for "Cram recently learned new cards" (reported by Manfred Ernst).
- Fix for escaped hex unicode in text file import (reported by JDelage).
- Fix for headless sync server losing user id (report by Marcin Mielniczuk).
- Fix for Anki learning data import (reported by syonax).
- Various minor cleanups and fixes (Marcin Mielniczuk).
- Fix txt import under Mac (reported by Henrik and JDelage, fixed by Devin
  Howard).
- Fix for continuous reset of scheduler when DST changes (reported by
  ADFairbanks).