Merge pull request #25 from camisatx/quandl-eod

Add Quandl EOD Extractor

Fix (#15) a bug in the delete query within the extractor method of th…

…e QuandlDataExtraction class

The query did not include a condition for which data_vendor_id should be deleted, thus all values greater than the specified date were deleted. Also change all static daily_prices table references in QuandlDataExtraction to the class variable called table.

Bump files to 1.4.3

Update all events tables within table_structure.md to show the remova…

…l of the NOT NULL constraint for source and source_id columns

Add a cross validator check to prevent None values from being conside…

…red. Also, remove the time element from the Google Finance data for daily prices.

Merge pull request #11 from camisatx/postgresql

Change database engine to PostgreSQL

Merge pull request #9 from camisatx/data_cross_check

Data cross check

Update pySecMaster to 1.3.1, along with adding parenthesis around the…

… links to the notes in README.md .

Merge pull request #3 from camisatx/symbology

TSID based structure

Fix data download rate limiters for both Quandl and Google Finance da…

…ta extractors. Now uses a simple rate limiter within the extractor function of the extractor.py file. Also, fix the name of the DataFrame object q_codes_df (q_code_df before).