Release 4.7

Update BW-DOS to version 1.4D.

Simplify INPUT rule, document missing prompt string.

Version 4.6 beta 2.

Remove fb-int compatibility binary.

With all the new targets, having an "integer only" version does not make
sense anymore, so stop creating the binary.

Release 4.5.2

Release 4.5.1

Release 4.5

Release candidate for 4.5

Release 4.4