Fixes and enhancements:

    * now allows for RMR Xapps to call code before entering the infinite loop
    * stop is now called before throwing NotImplemented in the case where the client fails to provide a must have callback; this ensures there is no dangling rmr thread
    * stop now calls rmr_close to correctly free up any port(s)
    * (breaking) renames `loop` to `entrypoint` since the function does not have to contain a loop (though it most likely does)
    * Changes wording around the two types of xapps (docs only)
    * Uses a new version of rmr python that crashes when the rmr mrc fails to init, which prevents an xapp trying to use an unusable rmr
    * more unit test code coverage
    * Adds more fields to setup like long_desc and classifiers so the pypi page looks nicer
    * Removes a bad release file (will be added back in subseq. commit)

Issue-ID: RIC-228
Change-Id: I2fa0fcce61f54d4ce1d6176ae71eb2139b1005a5
Signed-off-by: Tommy Carpenter <tc677g@att.com>