* treat scale nothing as unspecifed
* cast to decimal
* float int biginteger
* conversion failure ints
* loss of decimal precision
* precision loss for mixed column to float
* mixed columns
* loss of precision on inexact float conversion
* cleanup, reuse
* changelog
* review
* no fits bd
* no warning on 0.1 conversion
* fmt
* big_decimal_fetcher
* default fetcher and statement setting
* round-trip d
* fix warning
* expr +10
* double builder retype to bigdecimal
* Use BD fetcher for underspecified postgres numeric column, not inferred builder, and do not use biginteger builder for integral bigdecimal values
* fix tests
* fix test
* cast_op_type
* no-ops for other dialects
* Types
* sum + avg
* avg + sum test
* fix test
* update agg type inference test
* wip
* is_int8, stddev
* more doc, overflow check
* fmt
* finish round-trip test
* wip
