Update copyright to 2023 (#111)

* Update LICENSE to 2023 * PDF 2022
scikit-hep · Jan 3, 2023 · bc30249 · bc30249
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diff --git a/LICENSE b/LICENSE
@@ -1,6 +1,6 @@
 BSD 3-Clause License
 
-Copyright (c) 2018-2022, Eduardo Rodrigues.
+Copyright (c) 2018-2023, Eduardo Rodrigues.
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without

diff --git a/src/hepunits/constants/constants.py b/src/hepunits/constants/constants.py
@@ -70,18 +70,18 @@
 # Physical constants
 # -----------------------------------------------------------------------------
 
-# Speed of light in vacuum (exact value, taken from PDG 2020)
+# Speed of light in vacuum (exact value, taken from PDG 2022)
 c_light = 299792458 * m / s
 c_light_sq = c_light * c_light
 
 # Electron charge
 eminus = -eplus  # electron charge
 e_sq = eplus * eplus
 
-# Avogadro constant (exact value, taken from PDG 2020)
+# Avogadro constant (exact value, taken from PDG 2022)
 Avogadro = 6.02214076e23 / mole
 
-# Planck constant (exact value, taken from PDG 2020)
+# Planck constant (exact value, taken from PDG 2022)
 h_Planck = 6.62607015e-34 * joule * s
 
 hbar_Planck = h_Planck / two_pi
@@ -91,7 +91,7 @@
 
 hbarc_sq = hbarc * hbarc
 
-# Boltzmann constant (exact value, taken from PDG 2020)
+# Boltzmann constant (exact value, taken from PDG 2022)
 k_Boltzmann = 1.380649e-23 * joule / kelvin
 
 

diff --git a/src/hepunits/units/units.py b/src/hepunits/units/units.py
@@ -258,7 +258,7 @@
 # --------------------------------------------------------------------
 
 # Positron charge [Coulomb]
-e_SI = 1.602176634e-19  # exact value, taken from PDG 2020
+e_SI = 1.602176634e-19  # exact value, taken from PDG 2022
 
 
 # Electric charge [Q]