Version 0.6.0
- CRAN release
- Fixing conditional use of packages in suggests

Version 0.5.2
- Update documentation for parameterized modules.

Version 0.5.1
- New function: extend, can be used to extend an existing module definition.

Version 0.5.0
- CRAN release

Version 0.4.4
- Eliminated package dependencies: 'aoos' and 'methods'

Version 0.4.3
- Fix for print method.
- Removing class and function 'modfun'

Version 0.4.2
- The function 'import' now has the additional argument 'attach' and returns an
environment containing the specified imports.

Version 0.4.1
- Bugfix in expose when not called from within a module.

Version 0.4.0
- Cran release
- Minor bugfixes
- Update for testthat compatibility

Version 0.3.1
- 'export' now appends the vector of exports instead of replacing it.
- Bugfix in 'export' for regexs.

Version 0.3.0
- CRAN release

Version 0.2.4
- 'import' now checks if a package dependency is installed instead of quietly
waiting for a runtime error: fail early!

Version 0.2.3
- modules can now distinguish between situations in which they are constructed
inside a package, inside another module (nested module), or inside a script.
This behaviour is implemented in 'autoTopEncl' and can be overridden. This
behaviour defines the search path of a module.

Version 0.2.2
- 'use' and 'expose' have different argument names. '...' can now be used to
select objects to load / attach. The order of arguments has changed to be
consistent with 'import'. 'reInit' can be used to trigger re-initialization of
module.

Version 0.2.1
- When 'use' is called, modules are re initialized by default.
- A 'module' now has an attribute 'moduleConst' which knows how to initialize a
  module and contains sufficient information for that process.
- New function 'expose' to inherit a whole module.

Version 0.2.0
- CRAN release

Version 0.1.4
- ad-hoc documentation of functions using '##' as trigger.

Version 0.1.3
- as.module and thus use now accept a directory path. In this case all R-files
in that directory are treated as module and returned as list of modules.

Version 0.1.2
- use and import now avoid duplicate dependencies on the search path
- new functions: getSearchPath, getSearchPathNames to explore the local search
path

Version 0.1.1
- fix when de-parsing imports

Version 0.1.0
- CRAN release

Version 0.0.8
- use does not attach by default
- a regex in export is indicated by a leading "^"

Version 0.0.5
- exports

Version 0.0.4
- new function: as.module
