Have just one declaration of the version number

[Ed McDonagh]

No description provided.

[Ed McDonagh]

Switched version file to being in remapp, think this works now for non-installed code, should work for installed packages, about to check docs works, will check pip/distribute later. Hopefully now just one place to declare version number. Refs #314

→ <<cset 0d57db12f38d>>

[Ed McDonagh]

Corrected some mistakes in the rename for ref #314

→ <<cset d1d6f8b0efcc>>

[Ed McDonagh]

Adding version number issue to changes, now tested. Fixes #314

→ <<cset 71074603ad5c>>

[Ed McDonagh]

Updated date and minor change to #256 in changes and CHANGES. Changed beforedist.txt ref #314

→ <<cset f9980eb04ed7>>