Use old baud rate and autodetected divider to calculate new divider.

This works better with higher baud rates and drifting clocks.

CL: mos: Improve ESP flasher baud rate setting

PUBLISHED_FROM=7761e756c3ae7cc76e3b9a4fe3e40d06a779b2e8

cs_log_set_filter() is removed in favor of cs_log_set_file_level() which
allows setting log verbosity of individual files and/or lines.

E.g.: `mg_=1,mjs=1,=4` - level for for everything except mjs and mongoose.

We use the fact that we are usually pretty careful with our file names and use prefixes consistently.

In mos, `debug.file_level` sets the option on boot and `Sys.SetDebug` is updated to parse `file_level` option to change it at runtime.

CL: Log file:line instead of function; add cs_log_set_file_level()

PUBLISHED_FROM=49f18d4d0d3dd224865129a4f8fe6cccd1d9bc12

CL: mg: Properly support MQTT wildcards when matching topics

PUBLISHED_FROM=aa60a71d488f4b56dff0951886c8a9a4066fd4f2

CL: Add mg_strfree()

PUBLISHED_FROM=b80566218986e0607a9d2758bf776a1031b27212

CL: Send extra options with OPTIONS. Integrate https://github.com/cesanta/mongoose/pull/657

PUBLISHED_FROM=6ee609a92febd8d908f7713f94fb73657443a09a

CL: Fix nsleep100 on STM32

PUBLISHED_FROM=cabb98a0541bac9bb66bfa702d54bf8ff20063e7

CL: none

PUBLISHED_FROM=4bbc2175634e20a726dd4b2dadff57f945b261d0

CL: Check for NULL in tcp_recved_tcpip()

PUBLISHED_FROM=3f5bbc2e35b79d363eac4b99a1f0d17c9b81d4ec

CL: wifi: CC3220: Enterprise auth support

PUBLISHED_FROM=ce445eb5b740073c9a3f9811f1acd404ce134f2e

If user throttles receive by setting recv_mbuf_limit,
after the net interface reports connection as closed we must wait
for data to trickle through before disposing of it.
There can still b data in the buffers (e.g. SSL).

CL: mg: Ensure that user sees all the data before connection is closed

PUBLISHED_FROM=22be0fa368950a9fdb03cfb00febc7c0a1674b01

CL: Make MG_CTL_MSG_MESSAGE_SIZE overridable

Fix https://github.com/cesanta/mongoose/pull/987

PUBLISHED_FROM=b0a7c67297b98f616c9eadcd3c34b8747939c918

CL: Add mbuf_append_and_free() and mbuf_move()

PUBLISHED_FROM=bdf73906dd93b2ebeace160596508e15480b54b4

It can specify how much data was actually processed and the rest will be re-delivered on next poll.

CL: mg: Add ability for multipart data handler to provide pushback

PUBLISHED_FROM=e0168c5064c3a32921c9209bc09f4da2079cd616

Replacement for fw_meta.py commands and also supports unbundling .hex files.

General syntax is:

```
 $ mos create-fw-bundle -o fw.zip part1:prop1=val1,prop2=val2,... part2:...
```

Example of building a mos fw bundle for ESP8266:
```
 $ mos create-fw-bundle -o fw.zip --platform esp8266 --build-info=build_info.json \
    boot:addr=0x0,src=rboot.bin,update=false \
    boot_cfg:addr=0x7000,size=0x1000,fill=0xff \
    fw:addr=0x100000,src=demo-c.bin \
    fs:src=fs.bin,type=fs,addr=0x8000,fs_size=262144,fs_block_size=4096,fs_page_size=256,fs_erase_size=4096
```

Example of converting a HEX file to a bundle:
```
 $ mos create-fw-bundle -o fw.zip host:type=host,src=hostfw.hex
```

CL: mos: Add create-fw-bundle command

PUBLISHED_FROM=35f52ea53e4b5900463415257323a4c08cf45deb

PUBLISHED_FROM=754b98b3000b24ad3b3d9cc0b4c480ca005a1c3f

CL: none

PUBLISHED_FROM=3b74ca02e2960bbbf130f6d95aef679f2917e824

CL: mg: Read all available data during recv poll

PUBLISHED_FROM=b081025b9fb392c988924c7097b5333c38053f6f

CL: Add MG_MK_STR_N() and mg_str_starts_with()

PUBLISHED_FROM=f01003efc6aa6ff45fa99c7ad6e5319f5002f22d

Should use length of the exected response, not the response sent by the user.

CL: mg: Fix digest auth result comparison

PUBLISHED_FROM=23375133b8babac0b276b51395917ad975e1bd3c

CL: none

PUBLISHED_FROM=2e77d72cdf82454349a7fe29cc77bd0b90ac4369

CL: none

PUBLISHED_FROM=32418b7da17a68193e88405547152f58a4dd877f

PUBLISHED_FROM=b3ec2b3b43a464700a6e6d75b7336f823549cce3

CL: Update mbedTLS to 2.13.1

PUBLISHED_FROM=bd1216f727605a901f062a044c0c0ca762f4a6d1

PUBLISHED_FROM=0cf3029d9a9b851882325e2298b878bc83fc2d33

CL: mg: Check HTTP chunk size, ensure it's reasonable

PUBLISHED_FROM=d9f6babd314c092b42ce9e7fe31d6b30a38366a2

Clean the HTTP connection state when ia request/response has been fully
buffered and handler invoked.

Fixes https://github.com/cesanta/mongoose/issues/971

CL: mg: Fix handling of keepalive HTTP requests/responses

PUBLISHED_FROM=70c854aa306aacb9161f6ee48841f38dc0312e6b

Go back to Ubuntu 16.04 and older gcc-arm (4.9.3).

Boot loader just won't run when compiled with newer GCC (7.x).
It's likely that it can be fixed with compile switches but I couldn't figure it out quickly, so going to just downgrade for now to get it back to workign state.

CL: CC3200: Fix boot loader regression

PUBLISHED_FROM=b70b03bd17e03c7dae02328b32b855f3ca3ad6a9

CL: Add mgos_gpio_blink()

PUBLISHED_FROM=a5d2e2f44413d1ab363abeeaf0fb497bd8f63d6d

PUBLISHED_FROM=694346bd6562c55e5ab00886df47f7cbfb0a3720

mbedTLS is just another lib now

CL: Use mbedTLS from mongoose-os-libs/mbedtls

PUBLISHED_FROM=bae4739d22e871bd268b8a3233dbb69634770243

CL: Integrate https://github.com/cesanta/mongoose/pull/667, fix documentation

PUBLISHED_FROM=80a939fc3276b89c29716e7373f674dba86769ee

CL: none

PUBLISHED_FROM=e354b67ab6f8246af50c601f5f70d36c029601ea

PUBLISHED_FROM=1fbe72f99bda5745c4b9b9def0601bdc5bf70e65

CL: Docs nits

PUBLISHED_FROM=1a2fc8080d94673acf300c6f07aba3a1e6272295

 * Update CubeL4 to 1.13.0
 * Rebuild OurTLS with `-DMBEDTLS_X509_CA_CHAIN_ON_DISK`
 * Add `-Wextra` and fix build issues

CL: Update STM32 build image

PUBLISHED_FROM=a7eacff7580bab6c6e40bdaf6164df575a717c55

Listeners still TODO

CL: ISM43XXX networking support (TCP, UDP client)

PUBLISHED_FROM=b58ba88b9e6bd7b55ccb607d0b69cea98cb52fa5

CL: STM32: Make LWIP optional

PUBLISHED_FROM=eebffe7800a74d7b69aafd95e476b2e90328be98

Can be used for cases where device has no networking but mongoose is still needed for its event loop.

CL: mg: Add net_if_null, a no-op net interface

PUBLISHED_FROM=e79b4a8667508bbde1437dda9dad77ce3a3aa630

 * Change return type of mg_mgr_poll to return number of events
 * Add mg_mgr_min_timer
 * Refactor main poll loop to remove LwIP-specific stuff

CL: Refactor mg polling

PUBLISHED_FROM=dc94618b32fa3c84a2f053bd04d134297780ec82

CL: Fix https://github.com/cesanta/mongoose/issues/962 - file upload on windows

PUBLISHED_FROM=85688eee147a1df468cca92f4ac61526ce9c02bf