[fix #48723465] Added comparison filter
[fix #48723465] ComparisonFilter can join to other filters
[fix #48723465] more comparison operator related tests
[fix #48723465] Removed unneeded 'model' parameter
Merge pull request #172 from ke4/48723465_add_comparison_filter_to_search

48723465 add comparison filter to search
[fix #48723465] Removed unneeded code
Merge pull request #173 from ke4/48723465_add_comparison_filter_to_search

[fix #48723465] Removed unneeded code
[fix #49115259] Add back searches to root JSON
[fix #49115259] removed unneeded requires - fix specs
Merge pull request #175 from ke4/49115259_add_searches_to_root_json

[fix #49115259] Add back searches to root JSON
[fix #49131067] upgraded bunny gem to 0.9.0.pre10
[fix #49131067] renamed opts to options
Merge pull request #177 from ke4/49131067_upgrade_bunny_gem_to_0_9_0_pre10_version

49131067 upgrade bunny gem to 0 9 0 pre10 version
[fix #49131067] heart_beat value is not mandatory
[fix #49131067] updated the message_bus spec
Merge pull request #178 from ke4/49131067_upgrade_bunny_gem_to_0_9_0_pre10_version

49131067 upgrade bunny gem to 0 9 0 pre10 version