Big rewrite of package

[quinnj]

Some of the big changes include:

• This will be a breaking, 1.0 release
• Use of BinaryBuilder for source driver managers
• Streamlines resultset fetching process supporting super-efficient direct column fetching for native types
• More robust/useful statement preparation and parameter binding by conforming to the DBInterface interface
• Moving the package to own it's own config; the aim here is to cut down on all the crazy config stuff available across the various driver managers and attempt to keep it close and sane; additional methods for adding/getting/deleting drivers and datasources have been added
• Enhance debugging capabilities via ODBC.setdebug and passing debug=true when executing statements.

Things still to do:

• test new driver/dsn management methods
• ensure tests pass across all platforms
• little more parameter binding testing
• Update index.md docs (internal docs have been updated)
• Update tests for various platforms

[codecov-commenter]

Codecov Report

Merging #263 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #263   +/-   ##
=======================================
  Coverage   72.67%   72.67%           
=======================================
  Files           5        5           
  Lines         644      644           
=======================================
  Hits          468      468           
  Misses        176      176           

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