updates

Author: TorkelE

HISTORY.md

@@ -1,7 +1,17 @@
 # Breaking updates and feature summaries across releases
 
 ## Catalyst unreleased (master branch)
-- Added a CatalystHomotopyContinuationExtension extension, which exports the `hc_steady_state` function if HomotopyContinuation is exported. `hc_steady_state` finds teh steady states of a reactin system using the homotopy continuation method.
+- Added a CatalystHomotopyContinuationExtension extension, which exports the `hc_steady_state` function if HomotopyContinuation is exported. `hc_steady_state` finds the steady states of a reactin system using the homotopy continuation method. This feature is only available for julia versions 1.9+. Example: 
+```julia
+wilhelm_2009_model = @reaction_network begin
+    k1, Y --> 2X
+    k2, 2X --> X + Y
+    k3, X + Y --> Y
+    k4, X --> 0
+end
+ps = [:k1 => 8.0, :k2 => 2.0, :k3 => 1.0, :k4 => 1.5]
+hc_steady_states(wilhelm_2009_model, ps)
+```
 
 ## Catalyst 13.4
 - Added the ability to create species that represent chemical compounds and know

docs/src/catalyst_applications/homotopy_continuation.md

@@ -9,7 +9,7 @@ integer Hill exponents). The roots of these can reliably be found through a
 *homotopy continuation* algorithm. This is implemented in Julia through the
 [HomotopyContinuation.jl](https://www.juliahomotopycontinuation.org/) package.
 
-Catalyst contains a special homotopy continuation extension that is loaded whenever HomotopyContinuation.jl is. This exports a single function, `hc_steady_states`, that can be used to find the steady states of any `ReactionSystem` structure. If you use this in your research, please [cite the HomotopyContinuation.jl publication](@ref homotopy_continuation_citation).
+Catalyst contains a special homotopy continuation extension that is loaded whenever HomotopyContinuation.jl is. This exports a single function, `hc_steady_states`, that can be used to find the steady states of any `ReactionSystem` structure. If you use this in your research, please [cite the HomotopyContinuation.jl](@ref homotopy_continuation_citation) and [Catalyst.jl]() publications.
 
 ## Basic example
 For this tutorial, we will use a model from Wilhem (2009)[^1] (which

docs/src/index.md

@@ -130,7 +130,7 @@ Slack's](https://julialang.slack.com) \#sciml-bridged and \#sciml-sysbio channel
 For bugs or feature requests [open an
 issue](https://github.com/SciML/Catalyst.jl/issues).
 
-## Supporting and Citing Catalyst.jl
+## [Supporting and Citing Catalyst.jl](@id catalyst_citation)
 The software in this ecosystem was developed as part of academic research. If you would like to help support it,
 please star the repository as such metrics may help us secure funding in the future. If you use Catalyst as part
 of your research, teaching, or other activities, we would be grateful if you could cite our work:

src/Catalyst.jl

@@ -106,8 +106,5 @@ export balance_reaction
 # HomotopyContinuation
 function hc_steady_states end
 export hc_steady_states
-if !isdefined(Base, :get_extension) # Workaround for 1.6 compatibility.
-    include("../ext/CatalystHomotopyContinuationExtension.jl")
-end
 
 end # module