1.0.6

Released: January 13, 2019

• [feature] [operations] Added Table and Column level comments for supported backends.
  New methods Operations.create_table_comment() and
  Operations.drop_table_comment() are added. A new arguments
  Operations.alter_column.comment and
  Operations.alter_column.existing_comment are added to
  Operations.alter_column(). Autogenerate support is also added
  to ensure comment add/drops from tables and columns are generated as well
  as that Operations.create_table(), Operations.add_column()
  both include the comment field from the source Table
  or Column object.

  References: #422