Final Publication of LAS 1.4 Revision 16 (Aug 2025)

Merge PR#166 to master from ASPRSorg/draft-1.4-R16

Summary of OFFICIAL changes:
* Clarified uniformity of GPS Time for all returns of a pulse.
* Added example usage of Overlap bit.
* Reworded mandatory zero Classification for Synthetic PDRF0-5.
* Added Byte Offset columns to Header, VLR, EVLR, and PDRF tables.
* Clarified how and when certain header fields should be zero-filled.
* Added Official LAS Wiki section.
* Clarified source of min/max XYZ and ExtraByte values. 
* More closely aligned data types with C99 definitions. 

Summary of INTERNAL changes:
* Update ASPRS address and phone number.
* Normalize internal refs and links.
* Update CI/CD to RTD, eliminating dependency on Travis and hand-rolled github action.

Author: esilvia

.github/workflows/pdf.yml

@@ -0,0 +1,48 @@
+name: Docs
+
+on:
+  push:
+    branches: '*'
+
+jobs:
+  docs:
+    name: Docs
+
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: true
+    container: ghcr.io/osgeo/proj-docs
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Print versions
+      run: |
+          python3 --version
+          sphinx-build --version
+          DEBIAN_FRONTEND=noninteractive apt-get update  -y
+          DEBIAN_FRONTEND=noninteractive apt-get install texlive-fonts-recommended -y
+    - name: Lint .rst files
+      run: |
+        if find . -name '*.rst' | xargs grep -P '\t'; then echo 'Tabs are bad, please use four spaces in .rst files.'; false; fi
+    - name: PDF
+      run: |
+        make latexpdf
+    - name: Spelling
+      run: |
+        make spelling
+    - uses: actions/upload-artifact@v4
+      with:
+        name: PDF
+        path: build/latex/LAS.pdf
+        if-no-files-found: error
+    - uses: actions/upload-artifact@v4
+      with:
+        name: TEX
+        path: build/latex/LAS.tex
+        if-no-files-found: error
+    - uses: actions/upload-artifact@v4
+      with:
+        name: Misspelled
+        path: build/spelling/output.txt
+        if-no-files-found: ignore
+

.gitignore

@@ -1 +1,2 @@
 build/
+.vscode

.travis.yml

@@ -17,4 +17,6 @@ help:
 # Catch-all target: route all unknown targets to Sphinx using the new
 # "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
 %: Makefile
-	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+
+

Makefile

@@ -25,3 +25,4 @@ New to LAS? New to GitHub? Want to help? No problem!
 Learn how to sign up and contribute [here](https://github.com/ASPRSorg/LAS/wiki/Get-Involved).
 
 [![Build Status](https://api.travis-ci.org/ASPRSorg/LAS.svg?branch=master)](https://travis-ci.org/ASPRSorg/LAS)
+