Merge pull request Creepsky#293 from Creepsky/development

1.7.16

Add auto cpu instruction set Creepsky#227

Added conan build

Fixed bug of wrong buffer size when set to fixed value

Better config error parsing

Added best deadline in last 30 rounds

Added restart function

Added display of too high deadlines on webinterface

Added difficulty difference info

Send total plotsize when cumulating Creepsky#222