* feat(DATEV Settings): button to show report
* feat(desk): add DATEV to Reports under Accounting
* fix(report DATEV): last calendar month as default
* fix: let user create DATEV Settings
(Instead of showing an error message.)
* Add master data to export
* add SQL statements to get customers and suppliers
* make data category a string
* fix SQL error
* fix SQL errors
* unique column names
* add encoding of constants
* get customer primary address and contact
* fix typo
* fix typo
* binary response
* add filename
* add filecontent
* rename account columns
* exclude account groups
* use compression, close file before transfer
* fix StringIO
* add basic tests
* fix assertion, merge test methods
* fix indentation
* relative import of constants
* fix path
* import os
* Add default currency to test company
* root accounts with parent = null
* move account-related things to setup()
* add: test headers
* company and filters become class properties
* add: test csv creation
* (fix): add missing account
* (fix): remove wrong space
* add items to sales invoice
* refactor: create test data
* fix: create cost center
* fix: doctype Accoutn
* fix: make sure account belongs to company
* fix: remove customer group and territory, save on a new line
* create default warehouses
* fix: make Item myself
* fix: item defaults are a list
* fix: use my own warehouse
* fix: use my own expense account
* fix: let you take care of the Sales Invoice Item
* fix: import zipfile
* add TODOs
* fix: workaround for pandas bug
* SQL: utf-8 everywhere to make conversion in tests unnecessary
* tests: zipfile must be encoded string
* fix(tests): invalid start byte
* fix(test): give is_zipfile() the file-like object it expects
* fix(test): fix encoding of colums
* fix(get_transactions): as_dict is 1 by default
* fix(tests): allow empty data
* refactor: rename columns in get_account_names
* fix(pandas): keep sorting columns
* fix: "lineterminator" must be a string
* fix(test): check if cost center exists
* fix: credit limit became a child table
* fix: save company after creation
* insert instead of save
* tests: setup_fiscal_year
* fix(test): import cstr
* fix(tests): fiscal year
* fix: can't concat str to bytes
* fix: make csv-encoding work for py2 and py3
* fix(test): use frappe.as_unicode instead of unicode
* fix: use BytesIO instead of StringIO for py3 compatibility
* fix(tests): use BytesIO instead of StringIO for py3 compatibility
