Inline & strip down ExpressionShortcuts

[TheConstructor]

So we now have NRT and I really like it! But currently we get some warnings during the build, mostly related to ExpressionShortcuts. I looked into it and created oformaniuk/ExpressionShortcuts#5, that would allow to get rid of the NRT-warnings.

Over a month has passed and the last change to any branch of that repository is currently 6 years old.

Now this library doesn't use everything of ExpressionShortcuts, and so I started out by adding an annotated copy of ExpressionShortcuts and then tried to strip out as many unnecessary features as possible, to not introduce a higher maintenance burden than necessary. I also tried to simplify a bunch of things - 6 years is quite some time in programming after all - and judging by the tests I may have been successful.

[rexm]

I have no idea what any of this means:

I looked into it and created oformaniuk/ExpressionShortcuts#5, that would allow to get rid of the NRT-warnings.

Over a month has passed and the last change to any branch of that repository is currently 6 years old.

Now this library doesn't use everything of ExpressionShortcuts, and so I started out by adding an annotated copy of ExpressionShortcuts and then tried to strip out as many unnecessary features as possible, to not introduce a higher maintenance burden than necessary. I also tried to simplify a bunch of things - 6 years is quite some time in programming after all - and judging by the tests I may have been successful.

A pull request description should describe the problem or opportunity, and explain the solution and intended impact. This is tracing the history of a change you made on an abandoned repository. Can you try again?