* Add missing "paragraph" to library.properties.
* Move not-to-be-exported includes to subdirectory.
Remove #include "IRremoteInt.h" from a number of files since it
now does not work any more, and since IRremote.h #includes it already.
This resolves#464.
* Remove #include <IRremoteInt.h> from examples, too.
* Make ir_Lego_PF_BitStreamEncoder.h exported (again).
* Revoked fe24095 (paragraph) to keep 1-1 correspondance to #464.