Merge pull request sergei-svistunov#56 from sergei-svistunov/fix_cach…

…e_key_callback

Fix result callback.

Merge pull request sergei-svistunov#55 from sergei-svistunov/fix_slic…

…e_of_ints

Fix slice of intergers

Merge pull request sergei-svistunov#54 from sergei-svistunov/fix_opti…

…onal_null_params

Fix null values in optional parameters

Merge pull request sergei-svistunov#53 from sergei-svistunov/slices_i…

…n_slice

Fix optional parameters

Merge pull request sergei-svistunov#52 from sergei-svistunov/slices_i…

…n_slice

Fix parsing slices in slice

Merge pull request sergei-svistunov#50 from sergei-svistunov/Print_In…

…ternal_server_errors_to_http_body_by_option

Print internal server errors to http body by option.

Merge pull request sergei-svistunov#37 from sergei-svistunov/response…

…-map-support

support map in the response

Merge pull request sergei-svistunov#47 from sergei-svistunov/fix_post…

…_fields_displaying_in_swagger

Fix post fields displaying in swagger.

Merge pull request sergei-svistunov#46 from sergei-svistunov/fix_bugs

Fix some bugs

Merge pull request sergei-svistunov#45 from sergei-svistunov/fix-swag…

…ger-host

fix swagger host