All: copyright years updated to 2026

Summary: this commit will not affect your project's software or analysis.

Until now, the ending copyright years of all files in Maneage were
2025. But we have already entered 2026 so it is important to update them.

With this commit, the ending copyright year of all files is changed to
2026.

8 files changed, 9 insertions, 9 deletions

diff --git a/tex/src/delete-me-image-histogram.tex b/tex/src/delete-me-image-histogram.tex
index 6201c31..dcb46e0 100644
--- a/tex/src/delete-me-image-histogram.tex
+++ b/tex/src/delete-me-image-histogram.tex
@@ -1,6 +1,6 @@
 %% Plot the demonstration image and its histogram.
 %
-%% Copyright (C) 2019-2025 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+%% Copyright (C) 2019-2026 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This file is free software: you can redistribute it and/or modify it
 %% under the terms of the GNU General Public License as published by the
diff --git a/tex/src/delete-me-squared.tex b/tex/src/delete-me-squared.tex
index 51e5f5b..05191df 100644
--- a/tex/src/delete-me-squared.tex
+++ b/tex/src/delete-me-squared.tex
@@ -1,6 +1,6 @@
 %% PGFPlots code to plot a random set of numbers as demo
 %%
-%% Copyright (C) 2019-2025 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+%% Copyright (C) 2019-2026 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This file is free software: you can redistribute it and/or modify it
 %% under the terms of the GNU General Public License as published by the
diff --git a/tex/src/preamble-biblatex.tex b/tex/src/preamble-biblatex.tex
index e80d7d8..2b7b049 100644
--- a/tex/src/preamble-biblatex.tex
+++ b/tex/src/preamble-biblatex.tex
@@ -12,7 +12,7 @@
 %%     helps in clearly identifying the files and avoiding places that
 %%     complain about '.bib' files.
 %
-%% Copyright (C) 2018-2025 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+%% Copyright (C) 2018-2026 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This file is free software: you can redistribute it and/or modify it
 %% under the terms of the GNU General Public License as published by the
diff --git a/tex/src/preamble-maneage-default-style.tex b/tex/src/preamble-maneage-default-style.tex
index b7aa811..adb3eb9 100644
--- a/tex/src/preamble-maneage-default-style.tex
+++ b/tex/src/preamble-maneage-default-style.tex
@@ -6,7 +6,7 @@
 %% style defined here as a preamble. To ignore it, uncomment or delete the
 %% respective line in 'paper.tex'.
 %
-%% Copyright (C) 2019-2025 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+%% Copyright (C) 2019-2026 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This file is free software: you can redistribute it and/or modify it
 %% under the terms of the GNU General Public License as published by the
diff --git a/tex/src/preamble-maneage.tex b/tex/src/preamble-maneage.tex
index 9e6cc5a..a2a3a74 100644
--- a/tex/src/preamble-maneage.tex
+++ b/tex/src/preamble-maneage.tex
@@ -1,6 +1,6 @@
 %% Preamble for Maneage-related features.
 %
-%% Copyright (C) 2020-2025 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+%% Copyright (C) 2020-2026 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This LaTeX file is part of Maneage. Maneage is free software: you can
 %% redistribute it and/or modify it under the terms of the GNU General
diff --git a/tex/src/preamble-pgfplots.tex b/tex/src/preamble-pgfplots.tex
index 74f5290..8a2a98f 100644
--- a/tex/src/preamble-pgfplots.tex
+++ b/tex/src/preamble-pgfplots.tex
@@ -40,7 +40,7 @@
 %%    hasn't changed since the last build. TiKZ/PGFPlots won't rebuild the
 %%    plot.
 %
-%% Copyright (C) 2018-2025 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+%% Copyright (C) 2018-2026 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This file is part of Maneage (https://maneage.org).
 %
diff --git a/tex/src/preamble-project.tex b/tex/src/preamble-project.tex
index adb99b7..bcc10e5 100644
--- a/tex/src/preamble-project.tex
+++ b/tex/src/preamble-project.tex
@@ -4,8 +4,8 @@
 %% LaTeX usages. However, if any are not needed in your work, please feel
 %% free to remove them.
 %
-%% Copyright (C) 2018-2025 Mohammad Akhlaghi <mohammad@akhlaghi.org>
-%% Copyright (C) YYYY Your Name <your@email.address>
+%% Copyright (C) 2018-2026 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+%% Copyright (C) YYYY-YYYY Your Name <your@email.address>
 %
 %% This file is free software: you can redistribute it and/or modify it
 %% under the terms of the GNU General Public License as published by the
diff --git a/tex/src/references.tex b/tex/src/references.tex
index ae3e5d1..fefb636 100644
--- a/tex/src/references.tex
+++ b/tex/src/references.tex
@@ -1,7 +1,7 @@
 %% Non-software BibTeX entries. The software-specific BibTeX entries are
 %% stored in a '*.tex' file under the 'tex/dependencies' directory.
 %
-%% Copyright (C) 2018-2025 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+%% Copyright (C) 2018-2026 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% Copying and distribution of this file, with or without modification,
 %% are permitted in any medium without royalty provided the copyright