Release 0.2.0

Bug fixes

• Select with == conditions bugs
• Select with conditions by fields with collations

Features

• CRUD operations:
• replace
• upsert

Changes

• checks is disabled for internal functions by default
• limit option is renamed to first
• Reverse pagination (negative first) is supported
• after option accepts a tuple
• Output format for CRUD operations changed to set of rows and metadata
• Insert/replace/upsert methods now accept tuples.
  To process unflattened objects *_object methods are introduced.
• pairs accepts use_tomap flag to return tuples or objects