pressing enter after invalid search should be noop. Fixes #442

[wildhart]

[codecov[bot]]

Codecov Report

Merging #443 (bf4906e) into master (9ae16b6) will not change coverage. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #443   +/-   ##
=======================================
  Coverage   97.68%   97.68%           
=======================================
  Files          27       27           
  Lines        1037     1037           
  Branches      104      104           
=======================================
  Hits         1013     1013           
  Misses          9        9           
  Partials       15       15           

Impacted Files	Coverage Δ
src/components/Input.vue	98.97% <100.00%> (ø)

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[hemocy]

啥时候发布到npm?