fix: allow netresearch/jsonmapper ^3.0 and ^4.0 (#53)

ci: fix problems in Travis CI configuration (#47)

fix: update minimal reflection-docblock version (#41)

fix: allow netresearch/jsonmapper 2.0 (#39)

feat: allow phpdocumentor/reflection-docblock v5 (#37)

fix: Dispatcher::dispatch should return mixed (#31)

We have no idea what the method returns, so `mixed` is the most appropriate return type

fix: add LICENSE

Closes #11

fix(dispatcher): pass null for missing arguments (#27)

Currently if the received params object does not contain a certain parameter of the function
this parameter is simply omitted in the array, resulting in a displacement of the following
arguments.

This commit fills a missing parameter in the array by the value `null` so that at least all
parameters are represented in the args array.

fix: throw error if json encoding failed

chore: update phpdocumentor/reflection-docblock from 3.3.0 to 4.0.0 (#17

)

BREAKING CHANGE: The major update may conflict with version requirements of other modules.

closes #12