Remove buffer files by default and write temp files. Fixes Iss #23#26

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jhill1 merged 2 commits intomasterfrom

Apr 9, 2019

Commits on Apr 9, 2019

Remove buffer files by default and write temp files which get removed. Modified tests to check this works. Fixed duplicated test
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Removing python 2.7 in travis. Thi is now a python 3 module only....
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