add support for Elemental 4

[jsirish]

No description provided.

[codecov]

Codecov Report

Merging #13 into master will decrease coverage by 12.19%.
The diff coverage is 50%.

@@             Coverage Diff             @@
##             master     #13      +/-   ##
===========================================
- Coverage       100%   87.8%   -12.2%     
- Complexity       11      13       +2     
===========================================
  Files             2       2              
  Lines            34      41       +7     
===========================================
+ Hits             34      36       +2     
- Misses            0       5       +5

Impacted Files	Coverage Δ	Complexity Δ
src/Elements/ElementSponsor.php	83.33% <50%> (-16.67%)	10 <3> (+2)

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