Add upper Shellfu version limit

packaging/debian/control

  libpython2.7-minimal,
  libpython2.7-stdlib,
  shellfu (>= 0.10),
+ shellfu (<< 0.11),
  shellfu-bash,
  shellfu-bash-pretty,
 
  libpython2.7-minimal,
  libpython2.7-stdlib,
  shellfu (>= 0.10),
+ shellfu (<< 0.11),
  shellfu-bash,
  shellfu-bash-pretty,
 Description: __MKIT_PROJ_NAME__ - __MKIT_PROJ_TAGLINE__

packaging/template.spec

 BuildRequires:	python
 BuildRequires:	python-libs
 BuildRequires:	shellfu => 0.10
+BuildRequires:	shellfu < 0.11
 BuildRequires:	shellfu-bash-pretty
 Requires:	python
 Requires:	python-libs
 Requires:	shellfu => 0.10
+Requires:	shellfu < 0.11
 Requires:	shellfu-bash
 Requires:	shellfu-bash-pretty