Now getting the line-numbers right

[mauro3]

Fixes #137

Notes:

• adds MacroTools as a dep
• NamedTuples don't have line numbers. Thus none here either.

[codecov]

Codecov Report

Merging #139 (d5b0db3) into master (ecbf8df) will increase coverage by 0.11%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #139      +/-   ##
==========================================
+ Coverage   93.66%   93.77%   +0.11%     
==========================================
  Files           1        1              
  Lines         284      273      -11     
==========================================
- Hits          266      256      -10     
+ Misses         18       17       -1     

Impacted Files	Coverage Δ
src/Parameters.jl	93.77% <100.00%> (+0.11%)	⬆️

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[mauro3]

Probably should merge this. A bit hesitant because of the new MacroTools dep...