mention conda in installation doc, update release notes

Author: WolfgangWaltenberger

ReleaseNotes

@@ -3,7 +3,7 @@ Release v3.0.3, Thu xx Mar 2025
 
   * Fixes in build info to prepare for conda-forge
   * Fixed wrong imports, overlooked in refactoring from v2 -> v3 
-  * Tiny fix in error message
+  * Tiny fix in error message for exceptions when loading database
   * Fixed pythia8 autocompile
 
 Release v3.0.2, Thu 23 Jan 2025

docs/manual/source/Installation.rst

@@ -86,6 +86,9 @@ Installation Methods
    Instead, this will be done on the fly, at runtime, upon call of the :ref:`cross section computer(s) <xsecCalc>`.
    The external tools will also be located in the above smodels installation directory (<installdir>/lib/...).
 
+ * SModelS is also `indexed on conda-forge <https://anaconda.org/conda-forge/smodels>`_. Install via: ::
+
+     conda install conda-forge::smodels
 
  * Finally, SModelS is `indexed on pypi <https://pypi.org/project/smodels/>`_. Thus, if *pip3* (or *pip*) is installed in your machine, it is possible to install SModelS  without downloading the source code: ::
 

docs/manual/source/ReleaseUpdate.rst

@@ -38,7 +38,7 @@ New in Version 3.0.3:
 
   * Fixes in build info to prepare for conda-forge
   * Fixed wrong imports, overlooked in refactoring from v2 -> v3
-  * Tiny fix in error message
+  * Tiny fix in error message for exceptions when `loading database  <experiment.html#experiment.databaseObj.SubDatabase.loadDatabase>`_
   * Fixed pythia8 autocompile
 
 New in Version 3.0.2: