docs: Hook up doxygen to some of the core JS. Now maybe I am slightly incentivized to make progress on #39.

Doxyfile

@@ -342,7 +342,7 @@ OPTIMIZE_OUTPUT_SLICE  = NO
 #
 # Note see also the list of default file extension mappings.
 
-EXTENSION_MAPPING      =
+EXTENSION_MAPPING      = js=javascript
 
 # If the MARKDOWN_SUPPORT tag is enabled then doxygen pre-processes all comments
 # according to the Markdown format, which allows for more readable
@@ -944,9 +944,14 @@ WARN_LOGFILE           =
 # Note: If this tag is empty the current directory is searched.
 
 INPUT                  = README.md \
+                         core/app.js \
+                         core/core.js \
+                         core/http.js \
                          docs/ \
                          src/
 
+# Not yet: core/tfrpc.js core/client.js
+
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
 # libiconv (or the iconv built into libc) for the transcoding. See the libiconv
@@ -986,6 +991,7 @@ INPUT_FILE_ENCODING    =
 # *.f18, *.f, *.for, *.vhd, *.vhdl, *.ucf, *.qsf and *.ice.
 
 FILE_PATTERNS          = *.h \
+                         *.js \
                          *.md
 
 # The RECURSIVE tag can be used to specify whether or not subdirectories should