Hydrosensorreader

PR 67: Fix missing "Location" in Solinst files
PR 66: Address some unhandled Solinst instruments and configurations

PR 63: Fix test for get_data_at_time
PR 64: Remove TravisCI and add a yml file for Codecov
PR 62: make csv solinst reader more robust to missing data and badly formatted lines

PR 59 : Prevent bug when reading a solinst csv file with missing data in a channel
PR 60 : Allow reading files with dots in their path

Changelog:

PR 53 : Don't undo altitude or zero point offset systematically
PR 54 : Complete MANIFEST.in to add sampling and test files

Changelog:

- PR 42: Refactoring of solinst readers
- PR 43: Undo altitude correction of level data from Solinst loggers Gold and older
- PR 44: Trim Solinst test files
- PR 45: Add support for Solinst files produced by loggers older than the Gold series
- PR 46: Setup AppVeyor and Codecov
- PR 47: Fix packaging and setup packagin on AppVeyor
- PR 49: Assert Solinst readers plot method and fix some bugs
- PR 51: Undo zero point offset for Solinst loggers of the Gold series and older