Remove ScientificTypes & Improve error messages

[jbrea]

No description provided.

[codecov-commenter]

Codecov Report

Merging #14 (9275049) into dev (1a11b2a) will increase coverage by 0.70%.
The diff coverage is 20.00%.

@@            Coverage Diff             @@
##              dev      #14      +/-   ##
==========================================
+ Coverage   33.82%   34.53%   +0.70%     
==========================================
  Files           1        1              
  Lines         136      139       +3     
==========================================
+ Hits           46       48       +2     
- Misses         90       91       +1     

Impacted Files	Coverage Δ
src/data.jl	34.53% <20.00%> (+0.70%)	⬆️

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[jbrea]

@ablaom this should be ready now.

[ablaom]

@jbrea Thanks for this and the other improvements.

I agree this should be marked breaking.