Remove:
```
__LATEST_COMPOSE_RELEASE_VERSION__
__KOTLIN_COMPOSE_VERSION__
System.getenv("COMPOSE_TEMPLATE_COMPOSE_VERSION")
```
They pollute templates/examples.
Now, all paths where we need to change the version are hardcoded in the script.
Usage:
```
./replace.sh 1.0.0-rc6
```
This script is planned to run on CI
In the future I will add support for changing Kotlin version
* Update Gradle plugin publishing plugin
0.17.0 increases the maximum length
of plugin version strings to 50 characters
* Update website on plugin portal
* Replace usage of 'de.fuerstenau.buildconfig'
with a custom replacement, because the plugin
does not support Gradle 7.0+ and
there has not been any commit activity in 5 years
(https://github.com/mfuerstenau/gradle-buildconfig-plugin);
* Update 'com.github.johnrengelman.shadow' to 7.0.0
The build `0.4.0-build182` upgrades
`kotlinx-collections-immutable` library
(which is used by the compose runtime) to 0.3.4,
which was published to maven central,
so most usages of sunsetting jcenter repo
can be removed now.
Resolves#557