[DFI-960] param changed hooks

[g3co]

No description provided.

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (dfinance/launchpad@f59a0fd). Click here to learn what that means.
The diff coverage is n/a.

@@                  Coverage Diff                  @@
##             dfinance/launchpad      #12   +/-   ##
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  Coverage                      ?   47.41%           
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  Files                         ?      304           
  Lines                         ?    17829           
  Branches                      ?        0           
=====================================================
  Hits                          ?     8453           
  Misses                        ?     8628           
  Partials                      ?      748           

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