Pygt3x

This release adds support for GT3x V1 files, notable used in ENHANES.

What's Changed
* Support NHANES GT3X files by rouzbeh in https://github.com/actigraph/pygt3x/pull/16


**Full Changelog**: https://github.com/actigraph/pygt3x/compare/v0.1.6...v0.1.7

This releases fixes a crash on empty input files.

What's Changed
* Optimise calibration by rouzbeh in https://github.com/actigraph/pygt3x/pull/9


**Full Changelog**: https://github.com/actigraph/pygt3x/compare/v0.1.3...v0.1.4

What's Changed
* Improve reading ints from bytes by rouzbeh in https://github.com/actigraph/pygt3x/pull/8


**Full Changelog**: https://github.com/actigraph/pygt3x/compare/v0.1.2...v0.1.3

What's Changed
* Man/lower pandas by rouzbeh in https://github.com/actigraph/pygt3x/pull/7


**Full Changelog**: https://github.com/actigraph/pygt3x/compare/v0.1.1...v0.1.2