also ldap filter escape unicodes, not only strings
ldap defines boolean syntax as 'TRUE' and 'FALSE'

http://www.alvestrand.no/objectid/1.3.6.1.4.1.1466.115.121.1.7.html
Boolean input conversion added
Preparing release 0.3
Back to development: 0.4
expose_some_special_chars(value) and style
fix previous commit
filter: simplify dict_to_filter, support ! value prefix, add criteria_to_filter
Preparing release 0.4
Back to development: 0.5
filter handles non-ascii
Preparing release 0.5
Back to development: 0.6
Merge remote-tracking branch 'origin/master' into individual_aspects

Conflicts:
	src/pyldap/aspects.py
	src/pyldap/config.py
Initial commit of individual_aspects
Old binary conversion code removed