Combined version of LMDB mdb.master and mdb.master3 #313

Job	Run time
Check the heed3-encryption project (ubuntu-latest)	18s
Check the heed3-encryption project (windows-latest)	21s
Check the heed3-encryption project (macos-latest)	19s
Run the heed examples (ubuntu-latest)	37s
Check all the features of the heed project (ubuntu-latest)	24s
Run the heed examples (macos-latest)	31s
Check all the features of the heed3 project (ubuntu-latest)	9s
Check all the features of the heed project (macos-latest)	23s
Run the heed3-encryption examples (ubuntu-latest)	27s
Check all the features of the heed3 project (macos-latest)	1s
Run the heed3-encryption examples (macos-latest)	1s
Run the heed3 examples (ubuntu-latest)	15s
Test the heed project (ubuntu-latest)	1m 12s
Run the heed3 examples (macos-latest)	19s
Test the heed3 project (ubuntu-latest)	1m 15s
Test the heed project (windows-latest)	1m 38s
Test the heed3 project (windows-latest)	55s
Test the heed project (macos-latest)	43s
Test the heed3 project (macos-latest)	1s
Ensure the heed project is formatted	16s
	10m 5s

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