Refactor behavior of statement downloading
All statements are downloaded to ~/.sec_statement_parser/statements/[symbol]
Parse basic info of statement - Part I
Parse basic info of statement - Part II
Using built-in Date object
Finish contextRef parsing
Parse statement fields - part I
Set results hash to intance variable
Parse statement fields - part II
Parse statement fields - part III
Parse statement fields - part IV
New app to validate parser
Remove statement files
Minor changes
Modify version information
Merge branch 'refactor/v0.1.0' into develop