release v0.7.0

• python doc updates
• fix notebook failures due to ports in use from previous notebooks, add automatic port scan mechanism by default
• fix typo causing explanation dashboard failure in databricks
• fix logger causing failure if pytorch not installed
• changed plotly chart table to have display block
• fix port not assigned issue
• improved gevent error message
• initialize icons once, fix exceptions if empty object passed in
• resilience to inconsistently shaped input data