Add emailVerified to ParseUser

[cbaker6]

Notable improvements:

• Add emailVerified to ParseUser. The emailVerified key is skipped during encoding as this value can't be changed from the client.
• Improve relative query by taking QueryConstraint as an argument.

Add missing docs:

• Order enum for query
• Access enum for ACL
• ParseEncoder docs
• General operator query constraints
• Modified ParseSwift.initialize in readme to simplest form. Developers can look at API docs if they want to do a more sophisticated initialization such as adding a different live query server or using certificate pinning.

In addition:

• Add entry to changelog
• Prepare for release

[codecov]

Codecov Report

Merging #129 (3cd4caa) into main (99b6196) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #129      +/-   ##
==========================================
- Coverage   81.38%   81.37%   -0.02%     
==========================================
  Files          65       65              
  Lines        5706     5708       +2     
==========================================
+ Hits         4644     4645       +1     
- Misses       1062     1063       +1     

Impacted Files	Coverage Δ
Sources/ParseSwift/Coding/ParseCoding.swift	89.36% <ø> (ø)
Sources/ParseSwift/Objects/ParseUser.swift	81.52% <ø> (-0.16%)	⬇️
Sources/ParseSwift/Protocols/Objectable.swift	87.50% <ø> (ø)
Sources/ParseSwift/Types/ParseACL.swift	86.09% <ø> (ø)
Sources/ParseSwift/Types/Query.swift	91.48% <100.00%> (+0.03%)	⬆️

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[TomWFox]

LGTM 👍🏻