BLD Add missing source files

This is necessary for `sdist` generation

Author: luispedro

package.yaml

@@ -86,6 +86,8 @@ dependencies:
 extra-source-files:
   - README.md
   - ChangeLog
+  - Html/*
+  - NGLess/Interpretation/Count/RefSeqInfoVector.h
 
 ghc-options:
   - -Wall
@@ -141,7 +143,7 @@ tests:
   nglesstest:
     main: Tests.hs
     source-dirs:
-        - NGLess
+        - NGLess # We cannot depend on NGLess because we compile with -DIS_BUILDING_TEST
         - Tests-Src/
     cpp-options: -DIS_BUILDING_TEST
     dependencies: