dgtal 0.9.2
dgtal 0.9.2

- add fails with for gcc 5 and 6 due to testClone2 failure
- add a recommended option to run the test suite
- add a recommended option to build the examples
- always install the examples
- add a test

Closes #3787.

Signed-off-by: ilovezfs <fbd54dbbcf9e596abad4ccdc4dfc17f80ebeaee2@icloud.com>

kozo2/homebrew-science,dpo/homebrew-science,heuermh/homebrew-science,quantumsteve/homebrew-science,philippbayer/homebrew-science,parcollet/homebrew-science,DabeDotCom/homebrew-science,andrewjpage/homebrew-science,maplesond/homebrew-science,pditommaso/homebrew-science