Fixed Bugs. Added Spanish translation. Updated German, French, and Russian

Fixed bug caused by swifty beaver that would crash gswitch if the user had an old version of xcode installed.

Updated French and German translations.
Updated Russian translations thanks to @kikudjira.
Added Spanish translations thanks to @rauldzmartin

Added preference to override igpu warning

Added #44. This allows the user to always change to force integrated when they have gpu dependencies without a warning message

Fixed display detection for better mode switching

gSwitch now remembers the last used mode when a display is connected and will return to that mode when the display is disconnected

Added Russian Translation

Thanks to grishamsc gSwitch now supports russian localization

Rerelease as zip

Fixed all codesign issues and rereleasing as zip to fix auto updates

Fixed Codesign Issue

The only way I could get it to work right now was to release it as a .dmg but this will break automatic updates for the time being.

New Launcher System

Removed gSwitchLauncher and replaced it with LaunchAtLogin - Fixes #35. Also the app is now sandboxed and hardened runtime is enabled so the app is significantly more secure.

1.8.6-experimental

Test release for auto updates

Fixed small bugs

Fixed GPU change notifications and added warning about unsupported hardware

Build for correct target SDK

Accidentally left 10.14 selected, but I'm still supporting 10.12