version 1.4.9.0 -- mainly a change to "trailer" parser rule in the gr…

…ammar

policies are learned from file and http URLs, other errors corrected,…

… and the readme was adjusted

replaced line accidentally removed

version 1.4.8.3

version 1.4.8.2

version 1.4.8.1

version 1.4.7

policy grammar mistakes were being obscured. this release should remedy

update version number

updating version so that package fix will be perculated out through pypi