`\thesis@selectLocale` macros.

were renamed to `\thesis@<locale>@spring` and `\thesis@<locale>@fall`.

The semantics have also changed. The `\thesis@parseDate` macro no
longer sets `\thesis@season` to `winter` if `\thesis@month` < 7 and to
`summer` otherwise. Instead, the `\thesis@season` macro is set to
`spring` if 2 > `\thesis@month` < 9 and to `fall` otherwise.

The `\thesis@academicYear` macro is no longer set to
`\thesis@year`-1/`\thesis@year` if `\thesis@month` < 7 and to
`\thesis@year`/`\thesis@year`+1 otherwise. Instead, the
`\thesis@academicYear` macro is set to
`\thesis@year`-1/`\thesis@year` if `\thesis@month` < 9 and to
`\thesis@year`/`\thesis@year`+1 otherwise.

These changed month ranges reflect more accurately the beginning and the
end of the spring and fall semesters.

`\language` switching wherenever available.

quality of the class and to fully decouple the logic from the backend.

file within the documentation. This section contains the definition of
all supported class options.

`\def\thesis@locale{...}`, which also switches hyphenation patterns. The
macro definitions inside locale files are now global to account for the
fact that it now makes sense to include locale files on-site (and
therefore possibly inside a group) using the `\thesis@selectLocale`.

the version of the package, when it's being typeset.

to match the lower camelcasing of the rest of the keys.

the style loader from the `\thesis@load` routine to a new
`\thesis@requireStyle` macro to make the semantics of
`\thesis@requireLocale` and `\thesis@requireStyle` more similar.

This is a regression, but demangling just the logo paths makes little
sense and there is no practical way to handle this for all file
inclusions. If you need to load resources from non-ASCII paths, you are
advised to use a Unicode-first engine (XeTeX, LuaTeX).

\thesis@subdir is now robust against relative paths and UTF-8 mangling.