NN tag on develop branch with major interface update. Please refer to…

… ARM.CMSIS.pdsc for details

Bump version and docs for release.

Change-Id: I185d5c5599ee1e2141518ca86628ae7fb812db7a

Pack: Fixup to version history.

Change-Id: Ib05bf03c662914350c016d1a7da3a8ae90bd2f6f

Fixed generated documentation for 5.5.1

- Added general version history.

Change-Id: Iae74ff8bd138d25e290cff7c331db995bf2be911

Updated generated documentation.

Change-Id: Ide55b6cffb84ef61b4a5b2c7b0513407fbe77b52

Docs: Updated generated documentation for 5.4.0

Change-Id: I9a99d0c814f3c74eb4414eb633faf5e2a08ef575

Doxygen: Fixed broken link from general revision history to Core(A) h…

…istory.

Added current date for development release 5.2.1-dev3.

Pack: Added release date for 5.2.0

Updated generated documentation for release 5.1.1