Importing all of mathlib makes building assignments very slow

[kesslermaximilian]

In assignment 3 and 4, there is the line
import Mathlib
at the beginning of the file.
If you clone the repository from GitHub and let VSCode set up elan to download mathlib, then (at least in my case), this downloads all source files. The line "import Mathlib" then means that all of Mathlib is caused to compile when building the file, which takes a really long time.

I would suggest / appreciate, if such lines could be avoided. In assignment 3, the line is not needed and you can just comment in out. In assignment 4, it could be replaced by
import Mathlib.Analysis.SpecialFunctions.Log.Basic
which (I think) is enough for the file.

I know there is nothing wrong with importing all of Mathlib, but it would be appreciated if that could be avoided.