Issue 35

[isichei]

This PR Closes issue #35, #36 and #37 Further changes to note:

Further changes to note

• db_suffix has been dropped completely. To set a suffix do it manually e.g. db.name = db.name + db_suffix

• db = DatabaseMeta(folderpath) is now replaced with db = read_database_folder(folderpath). table = TableMeta(filepath) is now replaced with table = read_table_json(filepath)`.

• DatabaseMeta() and TableMeta() constructors are now more standard with input parameters to define an object. e.g. table = TableMeta(name = 'table_name')

• keys in a table json definition have been updated to align with database keys. Specifically table_name has been replaced with name and table_desc has been changed with description.

[codecov-io]

Codecov Report

Merging #38 into dev will increase coverage by 0.08%. The diff coverage is 91.96%.

@@            Coverage Diff             @@
##              dev      #38      +/-   ##
==========================================
+ Coverage   64.58%   64.67%   +0.08%     
==========================================
  Files           4        4              
  Lines         737      736       -1     
==========================================
  Hits          476      476              
+ Misses        261      260       -1

Impacted Files	Coverage Δ
etl_manager/etl.py	53.36% <100%> (ø)	:arrow_up:
etl_manager/utils.py	72.41% <100%> (ø)	:arrow_up:
etl_manager/meta.py	55.9% <89.28%> (-0.62%)	:arrow_down:
tests/test_tests.py	92.21% <94.33%> (-0.78%)	:arrow_down:

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