drop dependency on pear/net_idna2
raise dependency on pear/net_smtp 1.9
raise dependency on masterminds/html5 2.7
add dependency on guzzlehttp/guzzle
switch from mkopinsky/zxcvbn-php to bjeavons/zxcvbn-php

drop dependency on pear/net_idna2
raise dependency on pear/net_smtp 1.9
raise dependency on masterminds/html5 2.7
add dependency on guzzlehttp/guzzle
switc from mkopinsky/zxcvbn-php to bjeavons/zxcvbn-php

- raise dependency on masterminds/html5 2.5.0
- raise dependency on kolab/net_ldap3 1.1.1