We already have the convenient degrees() and radians() functions to convert
between angle formats. This commit involves a lot of refactoring here and
there and I may have missed some places where conversions were needed. But
hopefully there aren’t may such places.

Using “Array” instead of “array” is now fully deprecated, and I replaced
the Log::Debug() etc. functions with msg::debug() etc. because log:: was
unavailable due to being a maths function.

Added up-to-date copyright notice and BOM to modified files, just in case.

The containers no longer force the user to use the ptrdiff_t type for
size information. For convenience, size() now always returns an int,
and the size_s() method offers a way to handle arrays with more than
2 billion elements. Internally, we still use ptrdiff_t, though.

Since so much code had to be changed, I took the opportunity to get
rid of capitalised accessors for classes that are lowercase.

and 2) fuck the Visual Studio compiler that crashes when confused.

scene so that g_scene can be deprecated later.

- removed 0 CR characters
 - removed 0 trailing whitespaces
 - replaced 88 tabs with spaces
 - fixed 3 svn:eol-style properties

- removed 0 CR characters
 - removed 0 trailing whitespaces
 - replaced 0 tabs with spaces
 - fixed 542 svn:eol-style properties

- removed 0 CR characters
 - removed 0 trailing whitespaces
 - replaced 0 tabs with spaces
 - fixed 542 svn:eol-style properties

classes instead of Video.