Trxasprefitpack

fit_tscan: Add slow option for the slower but more robust global optimization algorithm

What's Changed
* change comment style to google python style and update document by pistack in https://github.com/pistack/TRXASprefitpack/pull/19
* Bump pypa/gh-action-pypi-publish from 1.4.2 to 1.5.0 by dependabot in https://github.com/pistack/TRXASprefitpack/pull/23
* Bump actions/checkout from 2 to 3 by dependabot in https://github.com/pistack/TRXASprefitpack/pull/25
* Bump actions/setup-python from 2 to 3.1.0 by dependabot in https://github.com/pistack/TRXASprefitpack/pull/26
* fix bug in fit_tscan, add component plot by pistack in https://github.com/pistack/TRXASprefitpack/pull/27

New Contributors
* dependabot made their first contribution in https://github.com/pistack/TRXASprefitpack/pull/23

**Full Changelog**: https://github.com/pistack/TRXASprefitpack/compare/v0.4.6...v0.4.8

* exp_conv_gau: little improvement of numerical stability
* fit_tscan: extend parameter limit scheme to picosecond region
* add example for import module, view help document, instrument response function and voigt broadening spectrum.

**Deprecated**
TRXASprefitpack_info and docs submodule are deprecated, will be removed in version 0.5