Recompile the .tar.gz for IsotopeTableDF

Reinterpret missing abundance error as 0 for 0 or 100 abundance.

Merge pull request #3 from jarredclloyd/main

recompile with correct 126Te abundance

fix nubase typo 126Te

regenerate data

separate abundance uncertainty

separate abundance uncertainty

Create .gitignore

add CSVFiles

recompile isotopes_data.jl

recompile data with abundance uncertanties

enable parsing of isotope abundance uncertainty

Add .tar.gz archive of isotopes_data.jld2 for artifacts.

Streamlined PR#1.