[Users] GeoExt v2.1.0-beta.1 released

[Christian Mayer]

Hi all,

the GeoExt developers are proud to announce that GeoExt 2.1.0-beta.1 [1]
has been released. The following has been done since the last release
2.1.0-alpha.1:

- [#357] Dispose layer tree node event listeners.
- [#361] Adapt README for Version 2.1.x
- [#352] Introduce ExtJS 5 example app
- [#349] Add outputFormat as a none-custom param of MapfishPrintProvider
- [#353] Fix accidental overwrite of alternateClassName of
WMSCapabilitiesReader.
- [#350] Adopt minimal Sencha Cmd package requirements

GeoExt v2.1.0 is supposed to introduce the compatibility to ExtJS 4
(v4.2.1) AND 5 (v5.1.0).
Please test this release and report issues on github [2] in order to
help us to get a final version 2.1.0 as soon as possible.

Thanks to all who were involved for their hard work in the last weeks
and months.

Cheers,
Chris

[1] https://github.com/geoext/geoext2/releases/tag/v2.1.0-beta.1
[2] https://github.com/geoext/geoext2/issues