Return TransactionReceipt on selfdestructed deployment

[iamdefinitelyahuman]

What I did

Return a TransactionReceipt when a deployment succeeds but the contract does not exist (self destructed during deployment).

Closes #537

[codecov-commenter]

Codecov Report

Merging #546 into master will increase coverage by 0.07%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #546      +/-   ##
==========================================
+ Coverage   87.93%   88.00%   +0.07%     
==========================================
  Files          56       56              
  Lines        6298     6304       +6     
  Branches     1392     1392              
==========================================
+ Hits         5538     5548      +10     
+ Misses        526      523       -3     
+ Partials      234      233       -1     

Impacted Files	Coverage Δ
brownie/network/account.py	94.19% <100.00%> (+0.07%)	⬆️
brownie/network/contract.py	90.94% <100.00%> (+0.40%)	⬆️
brownie/network/state.py	93.04% <0.00%> (+1.73%)	⬆️

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