optional curl follow location

merge from #81, #82

bug fix release

fixed #80 , #78

find users api

find users, find assignable users

additianal log level

ref #74

add create group

1.12.0

add 2 feature(create group, retrive users from group)

add issue link feature.

ref #73

fixed fields, expand query parameter generation bug.

1.10.7

fixed #71 fixed  multi dimensional paramArray bug.

fix no components info in the issue search results.

fixed #69

Fix searching issues with fixVersion

merged from #68

Serializing comment visibility.

merge from #61