Remove AXTLS mentions from asynctcp and httpupdate
More namespace MODULE and namespace { ... }

Use namespace instead of custom prefix everywhere.
Multiple init() funcs per namespace, instead of one large one for all
of available operators

Continue to apply namespace { ... }

Set -> On, when the handler could be added multiple times
Remove unused functions from the headers, and add correct names for the used ones.

More strict than the current platform-espressif8266 and also prefer this version to for the release tag.

For when scanning is disabled. Remove uniqueness requirement, since
settings may contain multiple SSID with different BSSID values.

wifi::Mac conversion helpers for both xxxxxxxxxx and xx:xx:xx:xx:xx:xx

Shuffle std::vector usage, trying out std::array for static data and
std::unique_ptr where common use-case is reserve / resize + emplace

Also try to workaroud exception string issue with gcc4.8, which should
not be a problem with gcc10.3 coming with Core 3.0.0, but... one solution at a time

Header exposes module functions, no need to check for config.
Hide module-local functions from the global namespace.

Initialize the vector with the values directly, ::reserve(len) instead of ::resize(len) (throught the ctor)
Use assignment when the intent is to replace the target value, not to exchange with something else.

- queue the actual response, as sending immediatly seems to have
  inconsistent results with the initial setup page
- allow single string password, just like a normal key
- provide default value for adminPass wsStore variant
- `reload` & `saved` are mutually exclusive

Generate initial connection list with all suitable networks, not only the best ones.
When scanning for a better network, remove results with worse rssi.

Don't remove extra scan results in the delayed scan function,
allow consumer to filter by itself.

Just `if (version < N)` instead of `if (version && (version < N))`
Fix existing functions that were not checking for `version > 0`

Immediatly try to connect when reloading settings and previous attempt
had failed. Because of locking, previously this caused a soft-lock of the
internal loop that required waiting for the long Reconnect timeout to
expire first.

Refactor the module to include namespace { ... } and move build settings into .cpp
Saves ~1.5Kb and also allows gcc to issue unused warnings for declared functions.

As a side-effect of refactoring, (temporarily?) remove softAp leases support.
Current Core moved dhcps support into a C++ code, forcing internal logic
to reference a specific object. Better to wait a bit until that
stabilizes and try again. Plus, it is not currently available in the esp-idf.

Also allow flashstringhelper -> settingskey conversion

Move settings & build flags into local namespace
Fix various functions referring to settings, when i2c is initialized once
Correctly use feature-flags in the .cpp instead of the .h

make sure the form name is used, not the panel one
also clean-up the api, so it's only mentioned once for both handlers
fix #2461

RGB is a #RRGGBB hex string, not a R,G,B
Current ltSaveDelay missing from the LIGHTS page

resolve #2451

Paranoid locking doesn't really matter in the current setup (but, leave some comments about how to solve it when it actually does).
Also copy internal tuple of save+transition+report and give the copy to the callback. Thus, don't assume the consumer is always nice,
and does not declare refs to internal struct variables, making this kind of hard to track.

Refactor internal code so it does not export functions to the built .o

Rephrase a bit, since it is a yes / no question box.
Losing the connection triggers ping handlers anyway.

per https://docs.npmjs.com/cli/v7/commands/npm-exec#compatibility-with-older-npx-versions
using --no / --no-install to avoid installing latest versions

making sure ci_install handles that instead, since the specific version in set via the package.json
(hopefully, npm docs actually mean that this will work)

Refactor WebUI:
- remove jquery dependency from the base custom.js and use vanilla JS
- remove jquery + jquery-datatables dependency from the RFM69 module
- replace jquery-datatables handlers with pure-css table + some basic cell filtering
  (may be incomplete, but tbh it is not worth additional 50Kb to the .bin size)
- introduce a common way to notify about the app errors, show small text notification
  at the top of the page instead of relying on user to find out about errors by using the Web Developer Tools
- replace <span name=...> with <span data-settings-key=...>
- replace <div> templates with <template>, disallowing modification
  without an explicit DOM clone
- run `eslint` on html/custom.js and `html-validate` on html/index.html,
  and fix issues detected by both tools

Streamline settings group handling in custom.js & index.html
- drop module-specific button-add-... in favour of button-add-settings-group
- only enforce data-settings-max requirement when the property actually exists
- re-create label for=... and input id=... when settings group is
  modified, so checkboxes refer to the correct element
- introduce additional data-... properties to generalize settings group additions
- introduce Enumerable object to track some common list elements for
  <select>, allow to re-create <option> list when messages come in
  different order

Minor fixes that also came with this:
- fix relay code incorrectly parsing the payload, causing no relay names
  to be displayed in the SWITCHES panel
- fix scheduler code accidentally combining keys b/c of the way C parses
  string literals on separate lines, without any commas in-between
- thermostat should not reference tmpUnit directly in the webui, replace with
  module-specific thermostatUnit that is handled on the device itself
- fix index.html initial setup invalid adminPass ids
- fix index.html layout when removing specific schedules

Sync changelog with recent changes
Codacy is no longer running (...pending viable config for clang-tidy, etc.)
Some of the features were only in wiki

Additional div made the mutator think we still have some active elements.
Also, small clean-up for type consistency in the WS part.

even when the cfg object does not list it, like with scheduler button
trying to fix #2459

since some of them are allowed to yeild(), don't change things while it is already running

Build with Core 3.0.1 release and update the git toolchain to match the upstream

fix #2457

Amends 7ea73554

- generic mdns query function so we don't forget about the removeQuery()
- full handle mdns logic in the mqtt module, check for running mdns
instance and periodically poll for _mqtt._tcp service
- autoconnect only when MQTT is enabled *and* there is no server
- use mqtt::settings and mqtt::build namespaces for settings
- some refactoring for topic <-> setting application
- prefer const String& to const char* in topic generation