Fix exec request with empty payload
Moving to californium 0.18.6-final
Change SCM URL format
[maven-release-plugin] prepare release leshan-server-1.0
[maven-release-plugin] prepare for next development iteration
Moving lwm2m coap server to the core module
Exception in client registry
Cleaning up version
[maven-release-plugin] prepare release leshan-server-0.1.0
[maven-release-plugin] prepare for next development iteration
Add missing licence headers
no tabs
fix #9 uber jar wasn't finding the main class
update name of the jar-with-dependencies

- updated name of the jar-with-dependencies in the Run example
- switch to ``` Markdown syntax for command line examples
initial support for Observation
add observation spec, writeattributes operation
Adopt latest changes from master branch
introduce ResourceSpec for specifying target resource(s)
Add missing license text, add Discover and Delete requests, improve
error handling
Build jar-with-dependencies in leshan-standalone as part of mvn:package
goal, fix NullPointerException when de-registering a client with no
observations active