diff --git a/lectures/otagofonts.sty b/lectures/otagofonts.sty
index c2a2c81..f10ebfa 100644
--- a/lectures/otagofonts.sty
+++ b/lectures/otagofonts.sty
@@ -1,6 +1,6 @@
-\def\packagedate{11 December 2024}
-\def\packageversion{2.0}
-\def\packageshortdate{2024/12/11}
+\def\packagedate{13 December 2024}
+\def\packageversion{2.0.1}
+\def\packageshortdate{2024/12/13}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % Set up official Otago fonts based on what’s available. Fall back to reasonable
@@ -9,15 +9,17 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % Version History
-% v1.0   Initial version, rebuilt from deprecated lecturecommon package.
-% v1.1   Refactored font checking mechanism.
-% v1.2   Fixed sans-serif scaling, added Noto Sans.
-% v1.3   Added new Wickliffe fonts and fallbacks.
-% v1.3.1 Switched serif font to Wickliffe Light.
-% v1.3.2 Switched bold fonts to Wickliffe (Sans) Medium.
-% v1.4   Switched from mathspec to unicode-math, further font tweaks.
-% v1.4.1 Replaced deprecated ifxetex with iftex.
-% v2.0   Rewritten for LuaTeX exclusively.
+% v1.0    Initial version, rebuilt from deprecated lecturecommon package.
+% v1.1    Refactored font checking mechanism.
+% v1.2    Fixed sans-serif scaling, added Noto Sans.
+% v1.3    Added new Wickliffe fonts and fallbacks.
+% v1.3.1  Switched serif font to Wickliffe Light.
+% v1.3.2  Switched bold fonts to Wickliffe (Sans) Medium.
+% v1.4    Switched from mathspec to unicode-math, further font tweaks.
+% v1.4.1  Replaced deprecated ifxetex with iftex.
+% v2.0    Rewritten for LuaTeX exclusively.
+% v2.0.1  Ensured LuaTeX detection occurs first and moved join operator
+%         substitution to relalg.sty.
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
@@ -25,25 +27,24 @@
 \ProvidesPackage{otagofonts}[\packageshortdate\space v\packageversion\space Otago standard fonts]
 
 
-\RequirePackage{amsmath}
-\RequirePackage{etoolbox}
-\RequirePackage[no-math]{fontspec}
-\RequirePackage{iftex}
-\RequirePackage{xstring}
-
-\RequirePackage{unicode-math} % should come last
-
-
 % This package requires LuaTeX, because XeTeX (a) doesn't really support
 % OpenType variable fonts and (b) is no longer recommended by the LaTeX
 % core team due to issues with PDF tagging.
 % (see <https://www.latex-project.org/news/latex2e-news/ltnews40.pdf>)
 % There were never really any good solutions for doing this in anything
 % other than XeTeX/LuaTeX anyway, so the fallback for other engines has
-% been removed.
+% also been removed.
+\RequirePackage{iftex}
 \RequireLuaTeX
 
 
+\RequirePackage{amsmath}
+\RequirePackage{etoolbox}
+\RequirePackage[no-math]{fontspec}
+\RequirePackage{xstring}
+\RequirePackage{unicode-math} % needs to go last
+
+
 % Try a few different fonts that are either the official Otago font or a
 % reasonable alternative, using etoolbox's list looping macros. The tricky
 % part is making it generic for all three font categories (main, sans, mono),
@@ -86,6 +87,7 @@
 
 \docsvlist{Wickliffe Light,Crimson Pro Light,Crimson Text,Georgia,TeX Gyre Pagella,Times New Roman}
 
+
 % Maths font.
 % In principle we can do the same thing for the maths font, but we’re
 % only going to use fonts built into TeXlive anyway, and we ideally
@@ -121,16 +123,6 @@
     }%
 }
 
-% The various join symbols aren't covered very well by many maths fonts
-% (including Latin Modern Math, annoyingly), so let's Frankenstein them
-% in from fonts that do have them. We need to hack the scale to get roughly
-% proportional looking sizes.
-% Outer joins (left, right, full):
-\setmathfont{STIXTwoMath-Regular.otf}[range={"027D5-"027D7}, Scale=0.875]
-% Inner join: (1.143 = 1 / 0.875)
-\setmathfont{KpMath-Light.otf}[range={"02A1D}, Scale=1.143]
-
-
 
 % Sans-serif font.
 \newbool{foundsansfont}