Add Array type

[ajnavarro]

No description provided.

[codecov-io]

Codecov Report

Merging #26 into master will increase coverage by 0.82%.
The diff coverage is 77.35%.

@@            Coverage Diff             @@
##           master      #26      +/-   ##
==========================================
+ Coverage    53.3%   54.13%   +0.82%     
==========================================
  Files          34       34              
  Lines        1724     1777      +53     
==========================================
+ Hits          919      962      +43     
- Misses        743      751       +8     
- Partials       62       64       +2

Impacted Files	Coverage Δ
sql/type.go	39.26% <77.35%> (+7.37%)	⬆️

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[dpordomingo]

LGTM