build: update to use wowchemy module

Removes hugo-academic Git Submodule and replaces it with Wowchemy Hugo Module

Also enable robots.txt in config.toml

config/_default/config.toml

@@ -20,9 +20,6 @@ copyright = ""
 ## Advanced options below ##
 ############################
 
-# Name of Academic theme folder in `themes/`.
-theme = "academic"
-
 # Get last modified date for content from Git?
 enableGitInfo = false
 
@@ -35,6 +32,7 @@ removePathAccents = true  # Workaround for https://github.com/gohugoio/hugo/issu
 summaryLength = 30  # Listing summary length in words. Also, see `abstract_length` in `params.toml`.
 paginate = 10  # Number of items per page in paginated lists.
 enableEmoji = true
+enableRobotsTXT = true
 footnotereturnlinkcontents = "<sup>^</sup>"
 ignoreFiles = ["\\.ipynb$", ".ipynb_checkpoints$", "\\.Rmd$", "\\.Rmarkdown$", "_files$", "_cache$"]
 
@@ -105,3 +103,8 @@ ignoreFiles = ["\\.ipynb$", ".ipynb_checkpoints$", "\\.Rmd$", "\\.Rmarkdown$", "
   [[related.indices]]
     name = "authors"
     weight = 20.0
+
+# Install Wowchemy
+[module]
+  [[module.imports]]
+    path = "github.com/wowchemy/wowchemy-hugo-modules/wowchemy"