Change flowchart color (#185)

* Change BG color to white

* Fix flowcharts where graphics overlap with text

* Increase border size

* change arrow style

* Allow standalone building of TikZ flowcharts

Useful for reference or website etc..

* Prevent manual hyphenation in TikZ diagrams

A Bit of a manual tweak.. but worth it to look nicer :D

* Add missing file for flowcharts

---------

Co-authored-by: Cedric <ced@awase.ostal>

book/figures/export_figures.sh

@@ -1,8 +1,15 @@
 #!/bin/bash
-for i in *.pdf
-do
-  docker run -v $(pwd):/imgs dpokidov/imagemagick -density 900 -trim /imgs/$i -quality 100 /imgs/$i.png
-  rename 's/pdf.png/png/' *.png
-  rename 's/fig-/figure-/' *.png
-done
+#
 
+if [ "$#" -ne 1 ]; then
+    for i in *.pdf
+    do
+      target=figures/`basename $1 .png.pdf`.png
+      docker run -v $(pwd):/imgs dpokidov/imagemagick -density 900 -trim /imgs/$i -quality 100 /imgs/${target}
+      rename 's/fig-/figure-/' *.png
+    done
+else
+    target=figures/`basename $1 .png.pdf`.png
+    echo "Converting: " $1 " to: " ${target}
+    convert -density 900 -trim $1 -quality 100 ${target}
+fi