Entity Framework Core 2 - not recognizing context for Core library

I'm used to having my EF entities in separate class library and having one solution just for this library and a unit-test project. It makes development much faster (quick compilation). After switching to EF Core (2), I ran into issue that migrations won't pick up DbContext and nothing would happen. So I tried running "Get-DbContext", which resulted in nothing - not even a message in the PMC console.
Interestingly enough, exactly the same code was working fine when the project type of the library was "Class Library (.NET Standard)" instead of "Class Library (.NET Core)".
After many experiments I figured out a way to make it work. It seems that it needs an "application" to be present in the solution for the migrations to work - could be web or console.
So, to fix this issue:

1. Add "Console App (.NET Core)" to your solution
2. Add EF Core nuget packages to the console app
3. Reference your class library from the console app
4. COMPILE!!
5. Done - now you can generate migrations (don't forget to set your console app as a "StartupProject" either through parameter or in the PMC combo at the top)

Android - Gmail and Calendar not receiving new data

This has been very frustrating - on my new phone, as I was going through the installation (Android 7.1) I picked the option to use the automatic restore from Google using my google account. All seemed ok, but then I noticed weird thing. My phone never notified me on new email messages or calendar events. I had to manually open the application and refresh (in fact run the refresh twice) for the new messages/events to show up.
I tried everything I found online - all settings, preferences, etc. After almost giving up and reinstalling the phone from factory reset, I found a cure.
Go to the: Settings -> Accounts, click on the "..." at the top-right corner, un-check and re-check the "Auto-sync data" option. This is it - ever since that all my push messages are getting in :)

Skype on windows 10 keeps 30% CPU utilization

I had this issue on my laptop - skype kept my CPU utilization at about 30% all the time. At last I found solution in this video - just change associated program for the ".htm" extension from chrome to internet explorer, restart skype and problem solved.