Allow Let blocks

[schlichtanders]

solves #62

without tests so far - would be great if someone could add a simple test which accords to this packages's test standards

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (7e60144) 97.41% compared to head (a14981a) 98.05%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #63      +/-   ##
==========================================
+ Coverage   97.41%   98.05%   +0.64%     
==========================================
  Files           2        2              
  Lines         116      103      -13     
==========================================
- Hits          113      101      -12     
+ Misses          3        2       -1     

Flag	Coverage Δ
unittests	98.05% <ø> (+0.64%)	:arrow_up:

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[davidanthoff]

Closing this for now, I am not yet convinced that we should do this :) Happy to continue the discussion over in the issue.