Optional package call points

 - pbox and todonotes are optional packages and are now located in langsci-optional
 - tabularx was loaded twice, once in langscibook.cls and once in langsci-optional. It is now loaded
   only once, in langsci-optional, where it is located near the column specifiers
 - Moved the rotating package to sit near the other float packages

langsci-optional.sty

@@ -8,6 +8,9 @@
 %%   Licence:
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
+\usepackage{pbox}   % boxes with maximum width
+\usepackage{todonotes}
+
 % Heiko Oberdiek
 % http://tex.stackexchange.com/questions/136644/vertical-space-in-interaction-with-figure-center-environment
 \newcommand{\oneline}[1]{%
@@ -109,7 +112,6 @@
 }
 \newcommand{\fittable}[1]{\resizebox{\textwidth}{!}{#1}}
 
-\usepackage{tabularx}
 \usepackage{array}
 \newenvironment{widetabular}[1][1]
   {\tabularx{#1\textwidth}}
@@ -134,6 +136,7 @@
 	\node at (2.25,1) (O) {ɔ};
 }
 
+\usepackage{tabularx} 
 %no hyphenation left alingned
 \newcolumntype{Q}{>{\raggedright\arraybackslash}X}
 %no hyphenation right aligned
@@ -147,9 +150,6 @@
 %no hyphenation right aligned fixed width
 \newcolumntype{R}[1]{>{\raggedleft\let\newline\\\arraybackslash\hspace{0pt}}m{#1}}
 
-\newcolumntype{d}[1]{D{.}{.}{#1}}
-
-
 % Underlining in gb4e-example Environments. Usual underlining commands that span multiple words do not work, because gb4e would parse it as one word.
 % Example: \underline{My example phrase} should become \ulp{My}{~~~~~} \ulp{example}{~~~~~} \ule{phrase}
 % Note: The 2nd Argument of the \ulp command is filled in by experience - if you are not familiar with the command, you should experiment a bit. Usually, five tildes are enough, but be sure to check the outcome.

langscibook.cls

@@ -365,15 +365,12 @@
 	\usetikzlibrary{positioning}
 	\usetikzlibrary{calc}
 
-\usepackage{pbox}   % boxes with maximum width
 \usepackage[hyphens]{url}
 \urlstyle{same}
 
 
 %% standard commands
 \usepackage{langsci-basic}
-\usepackage{todonotes}
-
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %      Covers
@@ -1534,7 +1531,7 @@ Storage and cataloguing done by \storageinstitution\\[3ex]
 %% This sets the default for the positioning of floats
 \renewcommand{\fps@figure}{htbp}
 \renewcommand{\fps@table}{htbp}
-
+\usepackage[figuresright]{rotating}
 \usepackage{booktabs} % for nicer lines
 
 %% floats
@@ -1781,10 +1778,6 @@ Storage and cataloguing done by \storageinstitution\\[3ex]
 \providecommand{\tabref}[1]{Table~\ref{#1}}
 \providecommand{\figref}[1]{Figure~\ref{#1}}
 
-
-
-\usepackage{tabularx} %must be loaded after hyperref. Maybe all float commands should be loaded here.
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %    Collection (edited volume):
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -2141,7 +2134,6 @@ Storage and cataloguing done by \storageinstitution\\[3ex]
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 \newlength{\LSPTmp}
-\usepackage[figuresright]{rotating}
 
 \ifbool{uniformtopskip}{}{% Donald Arseneau's automatic handling of page breaking from comp.text.tex: https://groups.google.com/d/topic/comp.text.tex/3eehwzortPg/discussion
     % With the optimisations from the memoir class. The memoir class has relative instead of absolute values.