mysql-native v1.2.0: Housekeeping: Deprecations, Cleanup and Doc Improvements

[Nick Sabalausky (Abscissa)]

An all-D MySQL/MariaDB client library:

https://github.com/mysql-d/mysql-native

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In v1.2.0:

There's also a few bugfixes, but aside from that, this is mainly a 
housekeeping release:

- The deperecated symbols have been removed (ie, the the outdated 
pre-v1.0.0 interfaces).

- Some unnecessary symbols have now become deprecated (with recommended 
alternatives). Mainly the redundant set of verbose exception names and 
querySet/ResultSet (just call std.array.array() on the input range 
returned by query() instead).

- Various documentation improvements.

- And some other miscellany.

Full changelog is here:
https://github.com/mysql-d/mysql-native/blob/master/CHANGELOG.md

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For the next release, slated as v1.3.0, the plan is to remove the 
symbols deprecated in this release, and take care of as much of this 
list as I can (it probably won't be all of it though):

https://github.com/mysql-d/mysql-native/milestone/2