Обновление от 30.09.2022

Edu (v5.0.19):
AssemblyInfo removed.
net6
lessons small fix
lessons small fix
lessons small fix
pbsr-4: build shell/lessons from source during release
lesson 02_marketdepths_trades: fix subscriptions
build & some warning fixes
lessons net5.0
truncate history

Shell (v5.0.20):
AssemblyInfo removed.
net6
ss-209: error in shell on strategy start
shell: fix config load errors
shell: json configs with migration
lessons small fix
lessons small fix
lessons small fix
lessons small fix
pbsr-4: build shell/lessons from source during release
fix Shell build
build & some warning fixes
shell net5.0 + compatibility fixes
truncate history