chore: add Travis CI docs deployment job and update build dependencies

- Add automatic docs deployment stage for master branch pushes in .travis.yml
- Include python3-markdown, python3-pygments, python3-setuptools, and ruby-sass as build dependencies
- Switch from container-based to sudo-required builds with trusty dist for custom Pygments lexer installation
- Ensure build directory exists before generating docs in Makefile

src/cli/modules.c

@@ -192,6 +192,7 @@ static ModuleRegistry modules[] =
 #undef END_CLASS
 #undef METHOD
 #undef STATIC_METHOD
+#undef FINALIZER
 
 // Looks for a built-in module with [name].
 //
@@ -241,7 +242,7 @@ char* readBuiltInModule(const char* name)
 
   size_t length = strlen(*module->source);
   char* copy = (char*)malloc(length + 1);
-  strncpy(copy, *module->source, length + 1);
+  memcpy(copy, *module->source, length + 1);
   return copy;
 }
 

src/cli/stat.h

@@ -9,11 +9,21 @@
   #include <sys\stat.h>
 
   // Map to Windows permission flags.
+  #ifndef S_IRUSR
   #define S_IRUSR _S_IREAD
-  #define S_IWUSR _S_IWRITE
+  #endif
 
+  #ifndef S_IWUSR
+  #define S_IWUSR _S_IWRITE
+  #endif
+
+  #ifndef S_ISREG
   #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
+  #endif
+
+  #ifndef S_ISDIR
   #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
+  #endif
 
   // Not supported on Windows.
   #define O_SYNC 0