Note static library requirement in `compiling.rst`
Pointer to overview.
statistics files are deprecated
Fix rppr info when no taxonomy is present
Catching up the CHANGELOG
min ADCL functionality has been written up
Doc: OPAM has moved.
Fixing my consistent mis-spelling of "empirical".
Making Hashtbl accesses safe when accessing files.
"Using" a variable to avoid compiler warning.
Better comments and a more consistent name.
Making --write-masked respect output dir.

Closes #317.

cc @metasoarous