Update default ARKODE methods

CHANGELOG.md

@@ -6,6 +6,25 @@
 
 ### New Features and Enhancements
 
+Added the `ARKODE_RALSTON_3_1_2` and `ARKODE_TSITOURAS_7_4_5` explicit
+Runge-Kutta Butcher tables.
+
+Improved the efficiency of default ARKODE methods with the following changes:
+
+| Type               | Old Default                                                      | New Default                                                        |
+| ------------------ | ---------------------------------------------------------------- | ------------------------------------------------------------------ |
+| 2nd Order Explicit | `ARKODE_HEUN_EULER_2_1_2`                                        | `ARKODE_RALSTON_3_1_2`                                             |
+| 4th Order Explicit | `ARKODE_ZONNEVELD_5_3_4`                                         | `ARKODE_SOFRONIOU_SPALETTA_5_3_4`                                  |
+| 5th Order Explicit | `ARKODE_CASH_KARP_6_4_5`                                         | `ARKODE_TSITOURAS_7_4_5`                                           |
+| 6th Order Explicit | `ARKODE_VERNER_8_5_6`                                            | `ARKODE_VERNER_9_5_6`                                              |
+| 8th Order Explicit | `ARKODE_FEHLBERG_13_7_8`                                         | `ARKODE_VERNER_13_7_8`                                             |
+| 2nd Order Implicit | `ARKODE_SDIRK_2_1_2`                                             | `ARKODE_ARK2_DIRK_3_1_2`                                           |
+| 3rd Order Implicit | `ARKODE_ARK324L2SA_DIRK_4_2_3`                                   | `ARKODE_ESDIRK325L2SA_5_2_3`                                       |
+| 4th Order Implicit | `ARKODE_SDIRK_5_3_4`                                             | `ARKODE_ESDIRK436L2SA_6_3_4`                                       |
+| 5th Order Implicit | `ARKODE_ARK548L2SA_DIRK_8_4_5`                                   | `ARKODE_ESDIRK547L2SA2_7_4_5`                                      |
+| 4th Order ARK      | `ARKODE_ARK436L2SA_ERK_6_3_4` and `ARKODE_ARK436L2SA_DIRK_6_3_4` | `ARKODE_ARK437L2SA_ERK_7_3_4` and `ARKODE_ARK437L2SA_DIRK_7_3_4`   |
+| 5th Order ARK      | `ARKODE_ARK548L2SA_ERK_8_4_5` and `ARKODE_ARK548L2SA_DIRK_8_4_5` | `ARKODE_ARK548L2SAb_ERK_8_4_5` and `ARKODE_ARK548L2SAb_DIRK_8_4_5` |
+
 ### Bug Fixes
 
 Fixed bug in `ARKodeSetFixedStep` where it could return `ARK_SUCCESS` despite