Release 0.7.1

[ea-rus]

Changes:

• Add IF_EXISTS and IF_NOT_EXISTS tokens to common creation and drop statement #286
• mindsdb is default dialect in parser
• Add support for anomaly detection model creation [ENH] Add support for anomaly detection model creation #294
• Created SECURITY.md Create SECURITY.md #298
• Add sql syntax for knowledge base Add sql syntax for knowledge base #299
• Added test coverage info to PRs comments
• Added repr for all AST nodes

Fixes:

• USING is not pass to step data if model is timeseries #292 (same as Support predict params in [select from join where] cases #285)
• Raise exception if subselect in join is not aliased (relate to [Bug]: Python-SDK better error message (Nonetype objects has no attributes error) mindsdb#7081)
• negative constant instead of unary operation, fixes: [Bug]: Web Crawler cannot fetch all subwebsites (because it cannot be used without LIMIT clause) mindsdb#7118
• Fix using predictor as a subselect Fix using predictor as a subselect #297
• Support of <> operator support <> token #306
• Filter for model in 'table join model' Filter for model in 'table join model' #305