Improve query comparison

[cbaker6]

• Ensure pipeline and fields are checked when comparing query
• doc nits
• add change log entry

[codecov]

Codecov Report

Merging #163 (9e78458) into main (86d4bc7) will decrease coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #163      +/-   ##
==========================================
- Coverage   82.11%   82.09%   -0.03%     
==========================================
  Files          70       70              
  Lines        6582     6584       +2     
==========================================
  Hits         5405     5405              
- Misses       1177     1179       +2     

Impacted Files	Coverage Δ
Sources/ParseSwift/Parse.swift	100.00% <ø> (ø)
Sources/ParseSwift/Types/Query.swift	93.20% <100.00%> (-0.16%)	⬇️
Sources/ParseSwift/Coding/AnyEncodable.swift	61.18% <0.00%> (-0.66%)	⬇️

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