Update release info (#4617)

* 1.14.6 release
* Update past release dates to be accurate

README.md

@@ -91,9 +91,12 @@ are tentative.
 | Release | New Features |
 | ------- | ------------ |
 | 1.14.5 | oss-fuzz fixes, ros3 VFD improvements |
+| 1.14.6 | Last maintenance release of 1.14 |
 | 1.16.0 | Complex number support, updated library defaults (cache sizes, etc.) |
 | 2.0.0 | Multi-threaded HDF5, crashproofing / metadata journaling, Full (VFD) SWMR, encryption, digital signatures, semantic versioning |
 
+Some HDF5 2.0.0 features listed here may be released in a 1.16.x release.
+
 This list of feature release versions is also tentative, and the specific release
 in which a feature is introduced may change.
 

doc/img/release-schedule.plantuml

@@ -27,13 +27,14 @@ Project starts 2023-01-01
 [1.14.1] happens at 2023-04-30
 [1.14.2] happens at 2023-08-31
 [1.14.3] happens at 2023-10-31
-[1.14.4] happens at 2024-03-31
+[1.14.4.2] happens at 2024-04-15
+[1.14.4.3] happens at 2024-05-22
 [1.14.5] happens at 2024-09-30
 [1.14.6] happens at 2025-04-30
 [1.14.1] displays on same row as [1.14.1]
 [1.14.2] displays on same row as [1.14.1]
 [1.14.3] displays on same row as [1.14.1]
-[1.14.4] displays on same row as [1.14.1]
+[1.14.4.2] displays on same row as [1.14.1]
 [1.14.5] displays on same row as [1.14.1]
 [1.14.6] displays on same row as [1.14.1]
 [1.14] is colored in #B187CF