Consider non-timeseries parameters to be ContinuousTimeseries

[ChrisRackauckas]

This does a few things. First of all it fixes SciML/SciMLBase.jl#1061 by making parameters plot as lines. But secondly, it treats parameters the same way as variables, which is a requirement if we want to make it simpler for the compiler to change things from the state to parameters.

[github-actions]

Benchmark Results (Julia vlts)

Time benchmarks

	master	7905b6a...	master / 7905b6a...
ODEProblem	0.0827 ± 0.0068 s	0.0835 ± 0.0059 s	0.991 ± 0.11
init	0.0621 ± 0.0021 ms	0.0599 ± 0.0016 ms	1.04 ± 0.045
large_parameter_init/ODEProblem	0.701 ± 0.0098 s	0.733 ± 0.023 s	0.957 ± 0.033
large_parameter_init/init	0.111 ± 0.0024 ms	0.11 ± 0.0021 ms	1.01 ± 0.029
mtkcompile	0.0346 ± 0.00076 s	0.0344 ± 0.0016 s	1.01 ± 0.052
time_to_load	5.56 ± 0.029 s	5.53 ± 0.026 s	1.01 ± 0.007

Memory benchmarks

	master	7905b6a...	master / 7905b6a...
ODEProblem	0.59 M allocs: 20.1 MB	0.591 M allocs: 20.1 MB	0.998
init	0.908 k allocs: 0.0479 MB	0.908 k allocs: 0.0479 MB	1
large_parameter_init/ODEProblem	4.58 M allocs: 0.176 GB	4.61 M allocs: 0.177 GB	0.991
large_parameter_init/init	1.75 k allocs: 0.0874 MB	1.75 k allocs: 0.0874 MB	1
mtkcompile	0.233 M allocs: 8.68 MB	0.233 M allocs: 8.68 MB	1
time_to_load	0.153 k allocs: 14.5 kB	0.153 k allocs: 14.5 kB	1

[github-actions]

Benchmark Results (Julia v1)

Time benchmarks

	master	7905b6a...	master / 7905b6a...
ODEProblem	0.0796 ± 0.006 s	0.0812 ± 0.0057 s	0.981 ± 0.1
init	0.0558 ± 0.012 ms	0.049 ± 0.012 ms	1.14 ± 0.38
large_parameter_init/ODEProblem	0.731 ± 0.046 s	0.729 ± 0.04 s	1 ± 0.084
large_parameter_init/init	0.0976 ± 0.012 ms	0.0977 ± 0.012 ms	0.999 ± 0.18
mtkcompile	0.033 ± 0.00039 s	0.0338 ± 0.00038 s	0.974 ± 0.016
time_to_load	5.38 ± 0.0065 s	5.38 ± 0.034 s	1 ± 0.0064

Memory benchmarks

	master	7905b6a...	master / 7905b6a...
ODEProblem	0.58 M allocs: 18.9 MB	0.58 M allocs: 18.9 MB	1
init	0.818 k allocs: 0.0319 MB	0.818 k allocs: 0.0319 MB	1
large_parameter_init/ODEProblem	4.65 M allocs: 0.168 GB	4.66 M allocs: 0.168 GB	0.997
large_parameter_init/init	1.66 k allocs: 0.0712 MB	1.66 k allocs: 0.0712 MB	1
mtkcompile	0.233 M allocs: 8.09 MB	0.233 M allocs: 8.08 MB	1
time_to_load	0.159 k allocs: 11.2 kB	0.159 k allocs: 11.2 kB	1