Updated license to Apache

[kessler-frost]

• I have added the tests to cover my changes.
• I have updated the documentation and CHANGELOG accordingly.
• I have read the CONTRIBUTING document.

Resolves #90

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (98b1a81) 97.28% compared to head (f48eb67) 97.28%.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop      #91   +/-   ##
========================================
  Coverage    97.28%   97.28%           
========================================
  Files            3        3           
  Lines          184      184           
========================================
  Hits           179      179           
  Misses           5        5           

Files	Coverage Δ
covalent_awslambda_plugin/__init__.py	100.00% <ø> (ø)
covalent_awslambda_plugin/awslambda.py	98.06% <ø> (ø)
covalent_awslambda_plugin/exec.py	92.85% <ø> (ø)

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