Added new file to .gitignore

Merge pull request tombatossals#123 from JaumeFigueras/master

Solved problems of main marker example

Version 0.5.2

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Merge pull request tombatossals#81 from houqp/houqp-master

bump version for new features

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Merge pull request tombatossals#71 from houqp/houqp-master

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Versión 0.3, next one breaks the actual API