Updates to text table support

This release refactors the existing support (which has only existed for less than a month) and breaks normal Go update rules.

Remove 'Type assertion on errors fails on wrapped errors' warnings in msg/errors.go

Merge pull request #1 from madkins23/tabular

Add text.TableDef

Add text.TableDef

text.TableDef defines a simple table structure that can be used to generate:

• a format string for the header row of the table,
• a divider string for use below the header or in between table sections, and
• a format string for the data rows of the table.

Fixes to text package

Refactor text/AddNumericSeparators() so that FormatUSD() can specify exactly two decimal digits but text/AddNumericSeparators() doesn't have to

Handle minus signs in text/FormatUSD() and text/AddNumericSeparators()

v1.42.1

Handle minus signs in text/FormatUSD() and text/AddNumericSeparators()

Break AddNumericSeparators() out from FormatUSD()

v1.42.0

Break AddNumericSeparators() out from FormatUSD()

Minor fixes

• Fix CVS -> CSV in error message
• Test for io.EOF during Read()

CSV reader changes

• Field names don't have to be all columns and can be in any order
• Only fields for named columns are returned
• Different size records are not erroneous
• Minor changes to field index and name lookups
• Header row is processed during NewReader().

Fix mis-release

Previous release tagged 1.41.0 then edited to v1.41.0 but still not updating so just make a new one with some really minor changes.

Add CVS Reader

Add CSV Reader wrapped around encoding/csv.Reader to provide:

• header-aware processing and
• map object result (header -> value).