Amep

This is the new **AMEP** version which includes full HDF5 support and uses
HDF5 files in the backend.

New features:

* new backend with full HDF5 support
* velocity autocorrelation function added
* orientational autocorrelation function added

Bug fixes:

* improved calculation of structure factors

Deprecation and removals:

* loading of previous `.pkl` trajectory file format not supported anymore

Contributors:

* Lukas Hecht

New features:

* fast mode for 2d structure factor implemented
* `replace_frame` added to BaseTrajectory
* cluster-resolved kinetic temperature added
* real fft and spectrum added
* axis line width and tick width added to `amep.plot.format_axis`
* cluster-resolved msd added
* `linear_mappable` added
* radius of gyration added
* `get_ids()` added to BaseFrame
* `in_circle` added
* cluster-resolved calculation of the number of next neighbors added
* `ClusterFraction` added

Bug fixes:

* small bug fixed in `pbc.pbc_points`
* bug in `traj.get_forces()` fixed
* bug in loading LAMMPS data fixed
* saving results of evaluate objects now possible with user-defined file name

Contributors:

* Lukas Hecht

This version includes small bug fixes and improvements.

Contributors:

* Lukas Hecht

This is the first complete **AMEP** version ready to be shared with our group
members.

Contributors
* Lukas Hecht