added feature to get historic closing price,volume data over a given time period

[paul-antony]

i have added the feature getHistoricData that will help get the closing price and volume traded of a stock over a mentioned period

[codecov[bot]]

Codecov Report

Merging #30 (c402413) into master (b91756c) will increase coverage by 1.99%. The diff coverage is 100.00%.

:exclamation: Current head c402413 differs from pull request most recent head 99f9915. Consider uploading reports for the commit 99f9915 to get more accurate results

@@            Coverage Diff             @@
##           master      #30      +/-   ##
==========================================
+ Coverage   65.26%   67.26%   +1.99%     
==========================================
  Files           8        9       +1     
  Lines         262      278      +16     
==========================================
+ Hits          171      187      +16     
  Misses         91       91              

Impacted Files	Coverage Δ
bsedata/bse.py	93.02% <100.00%> (+0.34%)	:arrow_up:
bsedata/historicData.py	100.00% <100.00%> (ø)

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