support: Update copyright year and active authors

[yangchoo]

Update copyright year to 2021 and active authors list

[codecov-io]

Codecov Report

Merging #291 (1f49bac) into master (44dfe6b) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #291   +/-   ##
=======================================
  Coverage   81.57%   81.57%           
=======================================
  Files          19       19           
  Lines        3625     3625           
=======================================
  Hits         2957     2957           
  Misses        668      668           

Impacted Files	Coverage Δ
autoprotocol/builders.py	85.20% <ø> (ø)
autoprotocol/constants.py	100.00% <ø> (ø)
autoprotocol/container.py	92.02% <ø> (ø)
autoprotocol/container_type.py	99.00% <ø> (ø)
autoprotocol/harness.py	68.58% <ø> (ø)
autoprotocol/informatics.py	88.46% <ø> (ø)
autoprotocol/instruction.py	90.73% <ø> (ø)
autoprotocol/liquid_handle/liquid_class.py	96.96% <ø> (ø)
autoprotocol/liquid_handle/liquid_handle_method.py	89.74% <ø> (ø)
autoprotocol/liquid_handle/mix.py	92.68% <ø> (ø)
... and 5 more

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[aota001]

thanks for updating!