theme: upgrade to latest v4.1 dev (talk front matter upgraded)

Also:

- Project and Custom widgets renamed (upgraded)
- Rearranges section positions and adds demo section to introduce
the template and help the user get started

content/home/projects.md

@@ -1,52 +1,75 @@
 +++
-# Projects widget.
-widget = "projects"  # Do not modify this line!
+# Portfolio widget.
+widget = "portfolio"  # Do not modify this line!
 active = true  # Activate this widget? true/false
+weight = 65  # Order that this section will appear.
 
 title = "Projects"
 subtitle = ""
 
-# Order that this section will appear in.
-weight = 50
+[content]
+  # Page type to display. E.g. project.
+  page_type = "project"
+  
+  # Filter toolbar (optional).
+  # Add or remove as many filters (`[[content.filter_button]]` instances) as you like.
+  # To show all items, set `tag` to "*".
+  # To filter by a specific tag, set `tag` to an existing tag name.
+  # To remove toolbar, delete/comment all instances of `[[content.filter_button]]` below.
+  
+  # Default filter index (e.g. 0 corresponds to the first `[[filter_button]]` instance below).
+  filter_default = 0
+  
+  # [[content.filter_button]]
+  #   name = "All"
+  #   tag = "*"
+  
+  # [[content.filter_button]]
+  #   name = "Deep Learning"
+  #   tag = "Deep Learning"
+  
+  # [[content.filter_button]]
+  #   name = "Other"
+  #   tag = "Demo"
 
-# Content.
-# Display content from the following folder.
-# For example, `folder = "project"` displays content from `content/project/`.
-folder = "project"
+[design]
+  # Choose how many columns the section has. Valid values: 1 or 2.
+  columns = "2"
 
-# View.
-#   1 = List
-#   3 = Card
-#   5 = Showcase
-view = 3
+  # Toggle between the various page layout types.
+  #   1 = List
+  #   3 = Card
+  #   5 = Showcase
+  view = 3
 
-# Widget layout
-# Legend: 0 = two columns (default), 1 = single column
-widget_layout = 0
+  # For Showcase view, flip alternate rows?
+  flip_alt_rows = false
 
-# For Showcase view, flip alternate rows?
-flip_alt_rows = false
-
-# Filter toolbar.
-
-# Default filter index (e.g. 0 corresponds to the first `[[filter]]` instance below).
-filter_default = 0
-
-# Add or remove as many filters (`[[filter]]` instances) as you like.
-# To show all items, set `tag` to "*".
-# To filter by a specific tag, set `tag` to an existing tag name.
-# To remove toolbar, delete/comment all instances of `[[filter]]` below.
-# [[filter]]
-#   name = "All"
-#   tag = "*"
-#
-# [[filter]]
-#   name = "Deep Learning"
-#   tag = "Deep Learning"
-#
-# [[filter]]
-#   name = "Other"
-#   tag = "Demo"
+[design.background]
+  # Apply a background color, gradient, or image.
+  #   Uncomment (by removing `#`) an option to apply it.
+  #   Choose a light or dark text color by setting `text_color_light`.
+  #   Any HTML color name or Hex value is valid.
+  
+  # Background color.
+  # color = "navy"
+  
+  # Background gradient.
+  # gradient_start = "DeepSkyBlue"
+  # gradient_end = "SkyBlue"
+  
+  # Background image.
+  # image = "background.jpg"  # Name of image in `static/img/`.
+  # image_darken = 0.6  # Darken the image? Range 0-1 where 0 is transparent and 1 is opaque.
 
+  # Text color (true=light or false=dark).
+  # text_color_light = true  
+  
+[advanced]
+ # Custom CSS. 
+ css_style = ""
+ 
+ # CSS class.
+ css_class = ""
 +++