Fix duplicate levels of folder command (opentoonz#6894)

Merge pull request opentoonz#5899 from andeon/fix/241-flipbook-odr

fix: ODR violations (opentoonz#241) by adding flipbooksettings.h for toggle vars

Merge pull request opentoonz#5790 from konero/blacklist-dll

Try fix lvcod64.dll crash

Update how_to_build_linux.md (opentoonz#5709)

Removed qt5-default it's which has been dropped upstream in Debian, the base libraries qtbase5-dev qttools5-dev-tools should be enough to pull in the other dependencies, otherwise we will add some more

v1.7.1 (opentoonz#4880)

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v1.7.0 (opentoonz#4873)

fix japanese translation (opentoonz#4839)

Merge pull request opentoonz#4385 from shun-iwasawa/modify_default_la…

…yout

Modify default workspace layout

v1.6.0 (opentoonz#4308)

czech translation .qm update v1.5 (opentoonz#3885)