Bump version to v1.9.0b4

Author: OttoWinter

Doxygen

@@ -38,7 +38,7 @@ PROJECT_NAME           = "esphomelib"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 1.9.0b3
+PROJECT_NUMBER         = 1.9.0b4
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a

Makefile

@@ -8,7 +8,7 @@ SPHINXPROJ    = esphomelib
 SOURCEDIR     = .
 BUILDDIR      = _build
 ESPHOMELIB_PATH = ../esphomelib
-ESPHOMELIB_TAG = v1.9.0b3
+ESPHOMELIB_TAG = v1.9.0b4
 CNAME = esphomelib.com
 
 .PHONY: html cleanhtml doxyg cleandoxyg deploy help webserver Makefile $(ESPHOMELIB_PATH)

conf.py

@@ -74,7 +74,7 @@
 # The short X.Y version.
 version = '1.9'
 # The full version, including alpha/beta/rc tags.
-release = '1.9.0b3'
+release = '1.9.0b4'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.