Data Value Validation Testing

[mjsqu]

Recent issues have highlighted a need to validate the values produced by the tap against expectations. This is particularly needed with respect to extreme values.

Related Issues:

• Type tinyint fails validation and doesn't load when the value is > 128 #2
• Columns of type datetimeoffset are omitted during extraction #50
• High-date datetimes are causing an invalid hours #51

Related PR:

• Supporting Datetimeoffset. Bug Fix: Tinyint and Datetime2 #54