update ChangeLog for 0.4.2

update cecho dependecy

Various changes

- Cleanup of state records
- Sorting based on numbers 1-9 switched to 0-9 as we have 10 columns now
- ChangeLog added and version in .app.src derived from ChangeLog
- Added convenience Makefile

update version of cecho

Merge pull request #20 from djnym/rebar3

Update to use an escript and rebar3 + others

Change Copyright and License

As agreed with Erlang Solutions Ltd I am transferring copyright back
to myself (Mazen Harake) and also reverted back to BSD License.

entop 0.0.1

First release
Features:
* Shows most common information which is needed when monitoring a remote Erlang node
* Sorting can be done on any column and sorting can be reversed
* Easy to extend by specifiying own callback modules