Lots of book formatting changes.

Changed default sizes of plots, changed the book template for
pdf creation, and lots of minor edits, most changing bold to
italic, and removing italic for emphasis.

pdf/book6x9.tplx

@@ -1,7 +1,6 @@
 % Inherit from report
 ((* extends 'report.tplx' *))
  
-((* set cell_style = 'style_ipython.tplx' *))
 
 ((* block margins *))
 \geometry{verbose,papersize={6in, 9in}, tmargin=.5in,bmargin=.5in,lmargin=.75in,rmargin=.75in}
@@ -11,7 +10,11 @@
 ((*- endblock in_prompt -*))
 
 ((* block input scoped *))
-    ((( cell.source | highlight2latex | indent(3) )))
+$\fontsize{5}{1.5}
+\selectfont$
+$\noindent\rule{8cm}{0.4pt}$
+    ((( cell.source | highlight2latex | indent(0) )))
+$\noindent\rule{8cm}{0.4pt}$
 ((* endblock input *))
 
 ((* block output_prompt *))
@@ -21,10 +24,11 @@
 ((* block docclass *))
 \documentclass{book}
 \setcounter{chapter}{0}
+\raggedbottom
 ((* endblock docclass *))
  
-((* block preamble *))
-((* endblock preamble *))
+((* block document *))
+((* endblock document *))
  
 ((* block title *))
 \title{Kalman and Bayesian Filters in Python}
@@ -32,6 +36,10 @@
 ((* endblock title *))
  
 ((* block markdowncell scoped *))
+\fontsize{10}{1.5}
+\selectfont
+\setlength{\parindent}{0em}
+\setlength{\parskip}{0.5em}
     ((( cell.source | citation2latex | strip_files_prefix | markdown2latex(extra_args=["--chapters"]) )))
 ((* endblock markdowncell *))