Release 0.3

Enhancements
===========

- Unified Inch Screw Threads

Fixes
===========

- PCO-1881 internal (minor diameter was too small)
- Dpitch problem with G-ext threads

Improvements
===========

- developer docs
- build system
- unit tests
- user does not need to rotate internal threads by 180 deg anymore
to fit external thread

!! Incompatibel changes !!
====================

We take the liberty to do this while the major version is still 0:

- internal thread is rotated by 180 deg (see improvements). nut() and bolt() are not affected by this

threadlib.scad

@@ -5,11 +5,11 @@ threadlib
 Create threads easily.
 
 :Author: Adrian Schlatter
-:Date: 2019-04-07
+:Date: 2019-11-11
 :License: 3-Clause BSD. See LICENSE.
 */
 
-function __THREADLIB_VERSION() = 0.2;
+function __THREADLIB_VERSION() = 0.3;
 
 use <thread_profile.scad>
 include <THREAD_TABLE.scad>
@@ -49,8 +49,7 @@ module nut(designator, turns, Douter, higbee_arc=20, fn=120, table=THREAD_TABLE)
         specs = thread_specs(str(designator, "-int"), table=table);
         P = specs[0]; Dsupport = specs[2];
         H = (turns + 1) * P;        
-        rotate(180)
-            thread(str(designator, "-int"), turns=turns, higbee_arc=higbee_arc, fn=fn, table=table);
+        thread(str(designator, "-int"), turns=turns, higbee_arc=higbee_arc, fn=fn, table=table);
 
         translate([0, 0, -P / 2])
             difference() {