Feat onerror

[xz8la8]

Fixes #66

[vercel]

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[codecov]

Codecov Report

Merging #68 (48b2625) into master (0640362) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master       #68   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            5         5           
  Lines          233       235    +2     
  Branches        65        66    +1     
=========================================
+ Hits           233       235    +2     

Impacted Files	Coverage Δ
src/Image.tsx	100.00% <100.00%> (ø)

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[shaodahong]

LGTM