resolved conflicts with master

lib/pure/asyncio.nim

@@ -233,8 +233,11 @@ proc asyncSockHandleWrite(h: PObject) =
       let sock = PAsyncSocket(h)
       try:
         let bytesSent = sock.socket.sendAsync(sock.sendBuffer)
-        assert bytesSent > 0
-        if bytesSent != sock.sendBuffer.len:
+        if bytesSent == 0:
+          # Apparently the socket cannot be written to. Even though select
+          # just told us that it can be... This used to be an assert. Just
+          # do nothing instead.
+        elif bytesSent != sock.sendBuffer.len:
           sock.sendBuffer = sock.sendBuffer[bytesSent .. -1]
         elif bytesSent == sock.sendBuffer.len:
           sock.sendBuffer = ""

lib/pure/httpclient.nim

@@ -220,9 +220,8 @@ proc parseResponse(s: TSocket, getBody: bool, timeout: int): TResponse =
       inc(linei, le)
       if line[linei] != ':': httpError("invalid headers")
       inc(linei) # Skip :
-      linei += skipWhitespace(line, linei)
       
-      result.headers[name] = line[linei.. -1]
+      result.headers[name] = line[linei.. -1].strip()
   if not fullyRead:
     httpError("Connection was closed before full request has been made")
   if getBody:

lib/pure/os.nim

@@ -387,6 +387,14 @@ proc existsDir*(dir: string): bool {.rtl, extern: "nos$1", tags: [FReadDir].} =
     var res: TStat
     return stat(dir, res) >= 0'i32 and S_ISDIR(res.st_mode)
 
+proc fileExists*(filename: string): bool {.inline.} =
+  ## Synonym for existsFile
+  existsFile(filename)
+
+proc dirExists*(dir: string): bool {.inline.} =
+  ## Synonym for existsDir
+  existsDir(dir)
+
 proc getLastModificationTime*(file: string): TTime {.rtl, extern: "nos$1".} =
   ## Returns the `file`'s last modification time.
   when defined(posix):

lib/pure/unicode.nim

@@ -132,6 +132,10 @@ proc toUTF8*(c: TRune): string {.rtl, extern: "nuc$1".} =
     result = newString(1)
     result[0] = chr(i)
 
+proc `$`*(rune: TRune): string =
+  ## converts a rune to a string
+  rune.toUTF8
+
 proc `$`*(runes: seq[TRune]): string =
   ## converts a sequence of runes to a string
   result = ""