Dataframe upgrade to 1.x

[khosravipasha]

Should wait to rerun tests here until the LC version is pushed.

Biggest changes are:

1. Cannot do DataFrame(matrix) anymore, and need to either do DataFrame(matrix, :auto) or DataFrame(Tables.table(matrix)).

2. Cannot use Base.convert for converting DataFrame to matrix, should use Tables.matrix(dataframe) instead.

[codecov-commenter]

Codecov Report

Merging #83 (16e8f7f) into master (028d90c) will decrease coverage by 7.55%.
The diff coverage is 88.88%.

❗ Current head 16e8f7f differs from pull request most recent head 9f27ccd. Consider uploading reports for the commit 9f27ccd to get more accurate results

@@            Coverage Diff             @@
##           master      #83      +/-   ##
==========================================
- Coverage   75.32%   67.76%   -7.56%     
==========================================
  Files          40       40              
  Lines        3036     3022      -14     
==========================================
- Hits         2287     2048     -239     
- Misses        749      974     +225     

Impacted Files	Coverage Δ
src/queries/marginal_flow.jl	60.63% <ø> (-5.46%)	⬇️
src/queries/map.jl	55.81% <66.66%> (-17.83%)	⬇️
src/Utils/information.jl	38.29% <100.00%> (ø)
src/Utils/misc.jl	38.88% <100.00%> (-1.86%)	⬇️
src/mixtures/em.jl	100.00% <100.00%> (ø)
src/queries/sample.jl	46.00% <100.00%> (-16.00%)	⬇️
src/parameters.jl	61.22% <0.00%> (-31.64%)	⬇️
src/queries/expectation_bit.jl	85.00% <0.00%> (-15.00%)	⬇️
... and 5 more

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