Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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+# utf8proc
+[![Travis CI Status](https://travis-ci.org/JuliaStrings/utf8proc.png)](https://travis-ci.org/JuliaStrings/utf8proc)
+[![AppVeyor status](https://ci.appveyor.com/api/projects/status/ivaa0v6ikxrmm5r6?svg=true)](https://ci.appveyor.com/project/StevenGJohnson/utf8proc)
+
+[utf8proc](http://julialang.org/utf8proc/) is a small, clean C
+library that provides Unicode normalization, case-folding, and other
+operations for data in the [UTF-8
+encoding](http://en.wikipedia.org/wiki/UTF-8).  It was [initially
+developed](http://www.public-software-group.org/utf8proc) by Jan
+Behrens and the rest of the [Public Software
+Group](http://www.public-software-group.org/), who deserve *nearly all
+of the credit* for this package.  With the blessing of the Public
+Software Group, the [Julia developers](http://julialang.org/) have
+taken over development of utf8proc, since the original developers have
+moved to other projects.
+
+(utf8proc is used for basic Unicode
+support in the [Julia language](http://julialang.org/), and the Julia
+developers became involved because they wanted to add Unicode 7 support and other features.)
+
+(The original utf8proc package also includes Ruby and PostgreSQL plug-ins.
+We removed those from utf8proc in order to focus exclusively on the C
+library for the time being, but plan to add them back in or release them as separate packages.)
+
+The utf8proc package is licensed under the
+free/open-source [MIT "expat"
+license](http://opensource.org/licenses/MIT) (plus certain Unicode
+data governed by the similarly permissive [Unicode data
+license](http://www.unicode.org/copyright.html#Exhibit1)); please see
+the included `LICENSE.md` file for more detailed information.
+
+## Quick Start
+
+For compilation of the C library run `make`.
+
+## General Information
+
+The C library is found in this directory after successful compilation
+and is named `libutf8proc.a` (for the static library) and
+`libutf8proc.so` (for the dynamic library).
+
+The Unicode version supported is 11.0.0.
+
+For Unicode normalizations, the following options are used:
+
+* Normalization Form C:  `STABLE`, `COMPOSE`
+* Normalization Form D:  `STABLE`, `DECOMPOSE`
+* Normalization Form KC: `STABLE`, `COMPOSE`, `COMPAT`
+* Normalization Form KD: `STABLE`, `DECOMPOSE`, `COMPAT`
+
+## C Library
+
+The documentation for the C library is found in the `utf8proc.h` header file.
+`utf8proc_map` is function you will most likely be using for mapping UTF-8
+strings, unless you want to allocate memory yourself.
+
+## To Do
+
+See the Github [issues list](https://github.com/JuliaLang/utf8proc/issues).
+
+## Contact
+
+Bug reports, feature requests, and other queries can be filed at
+the [utf8proc issues page on Github](https://github.com/JuliaLang/utf8proc/issues).
+
+## See also
+
+An independent Lua translation of this library, [lua-mojibake](https://github.com/differentprogramming/lua-mojibake), is also available.