cleanup requires and docs

docs/dsl/csv.rst

@@ -49,6 +49,11 @@ col_sep
 
   Column separator. One of the CSV custom options in Ruby. See next option below.
 
+quote_char
+  default: ``'"'``
+
+  Character used to quote strings that have a comma in them. One of the CSV custom options in Ruby. See next option below.
+
 CSV custom options in Ruby standard lib.
   All of the options in Ruby's std lib version of CSV are supported **except** ``headers`` is always ``true`` and ``converters`` is always set to ``:numeric``. See the `Ruby Docs <http://ruby-doc.org/stdlib-2.2.0/libdoc/csv/rdoc/CSV.html#method-c-new>`_ for information on the options.
 

lib/squib/dsl/csv.rb

@@ -1,4 +1,5 @@
 require_relative '../args/import'
+require_relative '../args/csv_opts'
 require_relative '../import/csv_importer'
 require_relative '../errors_warnings/warn_unexpected_params'
 

lib/squib/import/csv_importer.rb

@@ -1,3 +1,4 @@
+require 'csv'
 require_relative 'quantity_exploder'
 
 module Squib::Import

lib/squib/import/xlsx_importer.rb

@@ -1,3 +1,4 @@
+require 'roo'
 require_relative 'quantity_exploder'
 
 module Squib::Import

lib/squib/import/yaml_importer.rb

@@ -1,3 +1,4 @@
+require 'yaml'
 require_relative 'data_frame'
 require_relative 'quantity_exploder'