PostgresCodable should be a typealias

[fabianfett]

Motivation

PostgresCodable only marks a type as PostgresEncodable and PostgresDecodable. For this reason this should not be an extra protocol. Instead it should be a typealias. (See same pattern in Codable – which also is just a typealias).

Lucky for us we never made PostgresCodable public so far.

Changes

• PostgresCodable is a typealias

[codecov-commenter]

Codecov Report

Merging #321 (f583f2e) into main (ee024b7) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #321   +/-   ##
=======================================
  Coverage   41.62%   41.62%           
=======================================
  Files         115      115           
  Lines        9377     9377           
=======================================
  Hits         3903     3903           
  Misses       5474     5474           

Flag	Coverage Δ
unittests	41.62% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...es/PostgresNIO/New/Data/Bool+PostgresCodable.swift	95.34% <ø> (ø)
...s/PostgresNIO/New/Data/Bytes+PostgresCodable.swift	64.70% <ø> (ø)
...es/PostgresNIO/New/Data/Date+PostgresCodable.swift	89.28% <ø> (ø)
...PostgresNIO/New/Data/Decimal+PostgresCodable.swift	74.19% <ø> (ø)
...s/PostgresNIO/New/Data/Float+PostgresCodable.swift	76.66% <ø> (ø)
...ces/PostgresNIO/New/Data/Int+PostgresCodable.swift	36.60% <ø> (ø)
...es/PostgresNIO/New/Data/JSON+PostgresCodable.swift	100.00% <ø> (ø)
...IO/New/Data/RawRepresentable+PostgresCodable.swift	82.35% <ø> (ø)
.../PostgresNIO/New/Data/String+PostgresCodable.swift	100.00% <ø> (ø)
...es/PostgresNIO/New/Data/UUID+PostgresCodable.swift	96.96% <ø> (ø)
... and 1 more

[gwynne]

Nice!!! I didn't even notice that. (Not that Codable has much track record for getting things right, but this is one case where it definitely makes more sense this way.)