automatic table suppression disabled as default

[rpreen]

Resolves #82

Added suppress: bool argument to the ACRO constructor, which defaults to False.

For crosstab() and pivot_table() a new Boolean field "suppressed" is added to the properties dictionary to indicate whether the output table (csv in JSON) has been suppressed.

[codecov]

Codecov Report

Merging #91 (ff53d1d) into main (59a8f44) will increase coverage by 0.11%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #91      +/-   ##
==========================================
+ Coverage   97.09%   97.20%   +0.11%     
==========================================
  Files           4        4              
  Lines         447      465      +18     
==========================================
+ Hits          434      452      +18     
  Misses         13       13              

Impacted Files	Coverage Δ
acro/acro.py	98.83% <100.00%> (+0.05%)	⬆️
acro/record.py	98.10% <100.00%> (ø)
acro/utils.py	94.02% <100.00%> (+0.48%)	⬆️