Small fixes : mainly some SD2Snes fixes

-PutIPS commands should work properly again (for Savestate2snes)
-Some small Linux fixes.

Better SD2Snes support

-The SD2Snes support has been partially reworked and should be more reliable.
-Snes classic support improved to better detect one of the memory location

Some small improvments

Quite a bit of change:

• SD2Snes support is not activated by default.
• Lua Bridge support now uses a fixed list of names so you always get the same
• On the first run, a dialog window now shows up to make you choose the devices you want to activate.

0.8 is getting closer :)

Small fixes

Fix an issue raised by multitroid

Retroarch crash fix

Fix some crash related to the RetroArch support.

SD2Snes file upload fix

Fixed an issue with sending file request.

RetroArch multihost support

The RetroArch support now allows connecting to multiple RetroArch hosts including the SNES Classic. See the Readme to learn more about it.

SMZ3 Multiworld domain/url have be updated.

Bug fixes

This should fix some issue when using multiple application on the same device when one is writing memory.

Also a small fix in the updater to place qfile2snes update correctly.

QFile2snes improvment

Major QFile2Snes improvement:

• Local files view show classic headers (size/type) and allow for sorting.
• Can create directory.
• Should prevent from creating directory when drag&dropping directory.

Windows Updater change

• QUsb2Snes will update the updater before running it
• Error message when QUsb2snes is running and can't update

This should be one of the last releases before 0.8

Revert to Qt 5.12 for Windows

This a dumb release with a dumb release version
The Win updater does not work with Qt 5.13 anyways