Update: Add as_json param to Salesforce.restful

[michotross257]

When requesting an event log file using Salesforce.restful (which returns CSV data), you receive a JSONDecodeError. By including the suggested param, you can bypass JSON deserialization.

Example workaround that would be handled by new restful param:

import os

from simple_salesforce import Salesforce

LOG_FILE_PATH = 'sobjects/EventLogFile/xxxxxxxxxxxxxxxxxx/LogFile'

salesforce_conn = Salesforce(
    username=os.environ['SALESFORCE_USERNAME'],
    password=os.environ['SALESFORCE_PASSWORD'],
    security_token=os.environ['SALESFORCE_SECURITY_TOKEN'],
    instance_url=os.environ['SALESFORCE_INSTANCE_URL']
)

# raises JSONDecodeError
# result = salesforce_conn.restful(LOG_FILE_PATH)

# returns CSV data without any error
result = salesforce_conn._call_salesforce(
    method='GET',
    url=salesforce_conn.base_url + LOG_FILE_PATH,
    name=LOG_FILE_PATH
)

[michotross257]

Hi @jon-wobken - can you review these changes please? Thanks

[jon-wobken]

@michotross257 - going to try to get all the pending pulls reviewed by Friday/Saturday and release a new version

[michotross257]

Hi @jon-wobken - have you have a chance to review this PR?