release v0.6.8pre1

after a thousand years

README.md

@@ -30,6 +30,7 @@ for other operating systems, you may [build the source](#developer-info).
     - YM3526 (OPL) used in C64 Sound Expander
     - YM3812 (OPL2)
     - YMF262 (OPL3) with full 4-op support!
+    - YMF278 (OPL4) including sample channels
     - Y8950 (OPL with ADPCM)
   - ESS ESFM (like OPL3 but with more features)
   - square wave chips:
@@ -83,12 +84,13 @@ for other operating systems, you may [build the source](#developer-info).
     - including software tuning engine (TIunA)
   - POKEY used in Atari 8-bit computers
   - **Game Boy**
-    - including SOFTWARE ENVELOPES (zombie mode)
+    - including software envelopes (zombie mode)
   - Virtual Boy
   - Game Boy Advance
     - DMA (direct memory access) two channel mode
     - MinMod software driver by Natt Akuma
   - Nintendo DS
+  - Watara Supervision
   - modern/fantasy:
     - Commander X16 VERA
     - tildearrow Sound Unit
@@ -126,6 +128,7 @@ for other operating systems, you may [build the source](#developer-info).
   - SSG envelopes and ADPCM-B in Neo Geo
   - pitchable OPLL drums
   - full duty/cutoff range in C64
+  - optional PCM channel in C64
   - full 16-channel SegaPCM
   - ability to change tempo mid-song
   - decimal tempo/tick rate