use events name in lowercase

Author: LucaRainone

src/components/Calendar.vue

@@ -100,13 +100,13 @@ export default {
       this.refreshToPage();
     },
     fromPage_(val) {
-      this.$emit('update:fromPage', val);
+      this.$emit('update:frompage', val);
       if (!pageIsBeforePage(val, this.toPage_)) {
         this.toPage_ = getNextPage(val);
       }
     },
     toPage_(val) {
-      this.$emit('update:toPage', val);
+      this.$emit('update:topage', val);
       if (!pageIsAfterPage(val, this.fromPage_)) {
         this.fromPage_ = getPrevPage(val);
       }

src/components/CalendarDay.vue

@@ -170,21 +170,21 @@ export default {
         Math.abs(state.x - state.startX) <= defaults.maxTapTolerance &&
         Math.abs(state.y - state.startY) <= defaults.maxTapTolerance;
       if (state.tapDetected) {
-        this.$emit('daySelect', this.dayInfo, this.attributesMap);
+        this.$emit('dayselect', this.dayInfo, this.attributesMap);
       }
       state.started = false;
     },
     click() {
       if (this.touchState && this.touchState.tapDetected) return;
-      this.$emit('daySelect', this.dayInfo, this.attributesMap);
+      this.$emit('dayselect', this.dayInfo, this.attributesMap);
     },
     mouseenter() {
       this.isHovered = true;
-      this.$emit('dayMouseEnter', this.dayInfo, this.attributesMap);
+      this.$emit('daymouseenter', this.dayInfo, this.attributesMap);
     },
     mouseleave() {
       this.isHovered = false;
-      this.$emit('dayMouseLeave', this.dayInfo, this.attributesMap);
+      this.$emit('daymouseleave', this.dayInfo, this.attributesMap);
     },
     processAttributes() {
       const backgrounds = [];

src/components/DatePicker.vue

@@ -153,10 +153,10 @@ export default {
       this.toPage_ = val;
     },
     fromPage_(val) {
-      this.$emit('update:fromPage', val);
+      this.$emit('update:frompage', val);
     },
     toPage_(val) {
-      this.$emit('update:toPage', val);
+      this.$emit('update:topage', val);
     },
     mode() {
       // Clear value on select mode change
@@ -184,8 +184,8 @@ export default {
     filteredListeners() {
       // Remove parent listeners that we want to intercept and re-broadcast
       const listeners = { ...this.$listeners };
-      delete listeners['update:fromPage'];
-      delete listeners['update:toPage'];
+      delete listeners['update:frompage'];
+      delete listeners['update:topage'];
       return listeners;
     },
     popoverDidDisappear() {