Fixes bug in forecast thread (close app while downloading). Also makes some style adjustments

requirements_win.txt

@@ -1,13 +1,18 @@
+aiohttp==3.5.4
 altgraph==0.16.1
 asn1crypto==0.24.0
+async-timeout==3.0.1
+attrs==19.1.0
 certifi==2019.3.9
 cffi==1.11.5
+chardet==3.0.4
 cryptography==2.3.1
 Cython==0.29.6
 future==0.16.0
 idna==2.7
 intel-openmp==2019.0
 macholib==1.11
+multidict==4.5.2
 numpy==1.15.2
 pandas==0.23.4
 pefile==2018.8.8
@@ -28,3 +33,4 @@ six==1.11.0
 urllib3==1.24
 win-inet-pton==1.0.1
 wincertstore==0.2
+yarl==1.3.0