Fix empty return

See merge request !32

Normalize now returns scale and center

See merge request !31

Fix several bugs with the STL reader

See merge request !30

On windows ifstreams handle data differently depending if the file was opened in binary mode or not. This messed with
the parsing for some files.

Fixed reading a binary file into any other scalar type other than float. Binary STL always contain 32 bit floats, but
the parser depended on ScalarT for how much data should be read, which can lead to false results if e.g. a double
position type is given.

Fixed unit length

See merge request !29

Added dodecahedron object

See merge request !28

normalize now respects the attribute type (i.e. it now works for double)

See merge request !27

Feature/stats outstream template

See merge request !26

Fixed usage of non-existent function

See merge request !25