- moved doc from utils.md to lookahead-analysis.md and modified it (unfinished)
- added a check to automatically edit the config['backtest_cache'] to be 'none'
- adjusted test_lookahead_helper_export_to_csv to catch the new catching of errors
- adjusted test_lookahead_helper_text_table_lookahead_analysis_instances to catch the new catching of errors
- changed lookahead_analysis.start result-reporting to show that not enough trades were caught including x of y
switched from args to config (args still work)
renamed exportfilename to lookahead_analysis_exportfilename so if users decide to put something into it then it won't compete with other configurations