"""
This file is part of APAV.

APAV is a python package for performing analysis and visualization on
atom probe tomography data sets.

Copyright (C) 2018 Jesse Smith

APAV is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.

APAV is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with APAV.  If not, see <http://www.gnu.org/licenses/>.
"""

from __future__ import annotations
from typing import Sequence, Tuple, List, Dict, Any, Union, Type, Optional, TYPE_CHECKING
from numbers import Real
from numpy import ndarray
from lmfit.models import Model
from periodictable.core import Element
