py/lexer: Allow to access attributes directly on float/complex.
py/lexer: Allow to access attributes directly on float/complex.

The same way as CPython allows, e.g. "1.1.foo" or "1j.imag". Note that
CPython doesn't support accessing attributes directly on int ("1.foo"
is a syntax error).

Change-Id: Ieb191ec9fe3cdab8c79c1681ef2eac5a69ad7fd9
Signed-off-by: Paul Sokolovsky <9dc5061f178bb11813e14f1ed02ba27eaf21fa5d@users.sourceforge.net>

pfalcon/micropython,pfalcon/micropython,pfalcon/micropython,pfalcon/micropython,pfalcon/micropython